{"id":1979,"date":"2021-07-11T13:54:18","date_gmt":"2021-07-11T13:54:18","guid":{"rendered":"https:\/\/physicscatalyst.com\/testprep\/class-12-physics\/semiconductor-physics-class-12-mcq\/"},"modified":"2021-07-11T13:55:59","modified_gmt":"2021-07-11T13:55:59","slug":"semiconductor-physics-class-12-mcq","status":"publish","type":"post","link":"https:\/\/physicscatalyst.com\/testprep\/class-12-physics\/semiconductor-physics-class-12-mcq\/","title":{"rendered":"semiconductor physics class 12 mcq"},"content":{"rendered":"\n<p>Check out semiconductor physics class 12 mcq. This covers the topic like logic gates, transistor,  n and p type semiconductor etc. The Types of questions are True\/False, Assertion and Reason, Multiple choice questions<\/p>\n\n\n\n<p>I hope you will enjoy this test<\/p>\n\n\n<script type=\"text\/javascript\" >\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \nif(!window.jQuery) alert(\"The important jQuery library is not properly loaded in your site. Your WordPress theme is probably missing the essential wp_head() call. You can switch to another theme and you will see that the plugin works fine and this notice disappears. If you are still not sure what to do you can contact us for help.\");\n});\n<\/script>  \n  \n<div  id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam309\" style=\"display:none;text-align:center;\">Please wait...<br><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n<div class=\"watupro-exam-description\" id=\"description-quiz-309\"><hr \/>\n<p><strong>General Instructions<\/strong><\/p>\n<ol>\n<li>Your test contains multiple-choice questions with only one answer type of questions. There are a total of 20 questions<\/li>\n<li>This is a 45 min test. Please make sure you complete it in the stipulated time<\/li>\n<li>You can finish this test any time using the 'Submit' button.<\/li>\n<\/ol>\n<hr \/>\n<p>&nbsp;<\/p>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-309\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-5544'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>When n-p-n transistor is used as an amplifier ,then<\/div><input type='hidden' name='question_id[]' id='qID_1' value='5544' class='watupro-question-id'\/><input type='hidden' id='answerType5544' class='answerTypeCnt1' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5544'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5544[]' id='answer-id-22047' class='answer   answerof-5544  ' value='22047'   \/><label for='answer-id-22047' id='answer-label-22047' class=' answer'><span>Holes more from emitter to base<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5544[]' id='answer-id-22048' class='answer   answerof-5544  ' value='22048'   \/><label for='answer-id-22048' id='answer-label-22048' class=' answer'><span>Electrons move from base to collector<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5544[]' id='answer-id-22049' class='answer   answerof-5544  ' value='22049'   \/><label for='answer-id-22049' id='answer-label-22049' class=' answer'><span>Holes move from base to emitter<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5544[]' id='answer-id-22050' class='answer   answerof-5544  ' value='22050'   \/><label for='answer-id-22050' id='answer-label-22050' class=' answer'><span>Electrons moves from collector to base<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-2' style=';'><div id='questionWrap-2'  class='   watupro-question-id-5545'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>The forbidden energy band gaps in conductors, semiconductors, and insulators are x, y, and z respectively. The relation among them is<\/div><input type='hidden' name='question_id[]' id='qID_2' value='5545' class='watupro-question-id'\/><input type='hidden' id='answerType5545' class='answerTypeCnt2' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5545'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5545[]' id='answer-id-22051' class='answer   answerof-5545  ' value='22051'   \/><label for='answer-id-22051' id='answer-label-22051' class=' answer'><span>x = y = z <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5545[]' id='answer-id-22052' class='answer   answerof-5545  ' value='22052'   \/><label for='answer-id-22052' id='answer-label-22052' class=' answer'><span>x < y < z <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5545[]' id='answer-id-22053' class='answer   answerof-5545  ' value='22053'   \/><label for='answer-id-22053' id='answer-label-22053' class=' answer'><span>x > y > z <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5545[]' id='answer-id-22054' class='answer   answerof-5545  ' value='22054'   \/><label for='answer-id-22054' id='answer-label-22054' class=' answer'><span>x < y > z<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-3' style=';'><div id='questionWrap-3'  class='   watupro-question-id-5546'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>Zener diode is used for<\/div><input type='hidden' name='question_id[]' id='qID_3' value='5546' class='watupro-question-id'\/><input type='hidden' id='answerType5546' class='answerTypeCnt3' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5546'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5546[]' id='answer-id-22055' class='answer   answerof-5546  ' value='22055'   \/><label for='answer-id-22055' id='answer-label-22055' class=' answer'><span>Amplification<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5546[]' id='answer-id-22056' class='answer   answerof-5546  ' value='22056'   \/><label for='answer-id-22056' id='answer-label-22056' class=' answer'><span>Rectification<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5546[]' id='answer-id-22057' class='answer   answerof-5546  ' value='22057'   \/><label for='answer-id-22057' id='answer-label-22057' class=' answer'><span>Stabilization<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5546[]' id='answer-id-22058' class='answer   answerof-5546  ' value='22058'   \/><label for='answer-id-22058' id='answer-label-22058' class=' answer'><span>Producing oscillations in an oscillator<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-4' style=';'><div id='questionWrap-4'  class='   watupro-question-id-5547'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>At absolute zero temperature, a semi-conductor acts as a\/an<\/div><input type='hidden' name='question_id[]' id='qID_4' value='5547' class='watupro-question-id'\/><input type='hidden' id='answerType5547' class='answerTypeCnt4' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5547'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5547[]' id='answer-id-22059' class='answer   answerof-5547  ' value='22059'   \/><label for='answer-id-22059' id='answer-label-22059' class=' answer'><span>Conductor<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5547[]' id='answer-id-22060' class='answer   answerof-5547  ' value='22060'   \/><label for='answer-id-22060' id='answer-label-22060' class=' answer'><span>Insulator<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5547[]' id='answer-id-22061' class='answer   answerof-5547  ' value='22061'   \/><label for='answer-id-22061' id='answer-label-22061' class=' answer'><span>Dielectric<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5547[]' id='answer-id-22062' class='answer   answerof-5547  ' value='22062'   \/><label for='answer-id-22062' id='answer-label-22062' class=' answer'><span>None of these<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-5' style=';'><div id='questionWrap-5'  class='   watupro-question-id-5548'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>Which of the following logic gates is a universal gate?<\/div><input type='hidden' name='question_id[]' id='qID_5' value='5548' class='watupro-question-id'\/><input type='hidden' id='answerType5548' class='answerTypeCnt5' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5548'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5548[]' id='answer-id-22063' class='answer   answerof-5548  ' value='22063'   \/><label for='answer-id-22063' id='answer-label-22063' class=' answer'><span>OR <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5548[]' id='answer-id-22064' class='answer   answerof-5548  ' value='22064'   \/><label for='answer-id-22064' id='answer-label-22064' class=' answer'><span>NOT <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5548[]' id='answer-id-22065' class='answer   answerof-5548  ' value='22065'   \/><label for='answer-id-22065' id='answer-label-22065' class=' answer'><span>AND<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5548[]' id='answer-id-22066' class='answer   answerof-5548  ' value='22066'   \/><label for='answer-id-22066' id='answer-label-22066' class=' answer'><span>NAND<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-6' style=';'><div id='questionWrap-6'  class='   watupro-question-id-5549'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>The output of OR gate is 1<\/div><input type='hidden' name='question_id[]' id='qID_6' value='5549' class='watupro-question-id'\/><input type='hidden' id='answerType5549' class='answerTypeCnt6' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5549'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5549[]' id='answer-id-22067' class='answer   answerof-5549  ' value='22067'   \/><label for='answer-id-22067' id='answer-label-22067' class=' answer'><span>if both inputs are zero<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5549[]' id='answer-id-22068' class='answer   answerof-5549  ' value='22068'   \/><label for='answer-id-22068' id='answer-label-22068' class=' answer'><span>if either or both inputs are 1 <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5549[]' id='answer-id-22069' class='answer   answerof-5549  ' value='22069'   \/><label for='answer-id-22069' id='answer-label-22069' class=' answer'><span>if either or both inputs are 1 <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5549[]' id='answer-id-22070' class='answer   answerof-5549  ' value='22070'   \/><label for='answer-id-22070' id='answer-label-22070' class=' answer'><span>if either input is zero<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-7' style=';'><div id='questionWrap-7'  class='   watupro-question-id-5550'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>The output of AND gate is 1<\/div><input type='hidden' name='question_id[]' id='qID_7' value='5550' class='watupro-question-id'\/><input type='hidden' id='answerType5550' class='answerTypeCnt7' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5550'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5550[]' id='answer-id-22071' class='answer   answerof-5550  ' value='22071'   \/><label for='answer-id-22071' id='answer-label-22071' class=' answer'><span>if both inputs are zero<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5550[]' id='answer-id-22072' class='answer   answerof-5550  ' value='22072'   \/><label for='answer-id-22072' id='answer-label-22072' class=' answer'><span>if either or both inputs are 1 <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5550[]' id='answer-id-22073' class='answer   answerof-5550  ' value='22073'   \/><label for='answer-id-22073' id='answer-label-22073' class=' answer'><span>only if both inputs are 1 <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5550[]' id='answer-id-22074' class='answer   answerof-5550  ' value='22074'   \/><label for='answer-id-22074' id='answer-label-22074' class=' answer'><span>if either input is zero<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-8' style=';'><div id='questionWrap-8'  class='   watupro-question-id-5551'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>Drift current in a p-n junction is due to<\/div><input type='hidden' name='question_id[]' id='qID_8' value='5551' class='watupro-question-id'\/><input type='hidden' id='answerType5551' class='answerTypeCnt8' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5551'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5551[]' id='answer-id-22075' class='answer   answerof-5551  ' value='22075'   \/><label for='answer-id-22075' id='answer-label-22075' class=' answer'><span>Electric field<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5551[]' id='answer-id-22076' class='answer   answerof-5551  ' value='22076'   \/><label for='answer-id-22076' id='answer-label-22076' class=' answer'><span>Charge carriers density<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5551[]' id='answer-id-22077' class='answer   answerof-5551  ' value='22077'   \/><label for='answer-id-22077' id='answer-label-22077' class=' answer'><span>Collisions of electrons<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5551[]' id='answer-id-22078' class='answer   answerof-5551  ' value='22078'   \/><label for='answer-id-22078' id='answer-label-22078' class=' answer'><span>None of these<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-9' style=';'><div id='questionWrap-9'  class='   watupro-question-id-5552'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>if a small amount of antimony is added to the germanium crystal<\/div><input type='hidden' name='question_id[]' id='qID_9' value='5552' class='watupro-question-id'\/><input type='hidden' id='answerType5552' class='answerTypeCnt9' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5552'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5552[]' id='answer-id-22079' class='answer   answerof-5552  ' value='22079'   \/><label for='answer-id-22079' id='answer-label-22079' class=' answer'><span>it becomes a p-type semiconductor<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5552[]' id='answer-id-22080' class='answer   answerof-5552  ' value='22080'   \/><label for='answer-id-22080' id='answer-label-22080' class=' answer'><span>the antimony becomes an acceptor atom<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5552[]' id='answer-id-22081' class='answer   answerof-5552  ' value='22081'   \/><label for='answer-id-22081' id='answer-label-22081' class=' answer'><span>There will be more free electrons than holes in a semi-conductor<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5552[]' id='answer-id-22082' class='answer   answerof-5552  ' value='22082'   \/><label for='answer-id-22082' id='answer-label-22082' class=' answer'><span>its resistance is increased<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-10' style=';'><div id='questionWrap-10'  class='   watupro-question-id-5553'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span>The following diagram performs the logic function of<br \/>\r\n<br \/>\r\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1976\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2021\/07\/class12-semiconductor-mcq-1.png\" alt=\"\" width=\"317\" height=\"131\" \/><\/div><input type='hidden' name='question_id[]' id='qID_10' value='5553' class='watupro-question-id'\/><input type='hidden' id='answerType5553' class='answerTypeCnt10' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5553'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5553[]' id='answer-id-22083' class='answer   answerof-5553  ' value='22083'   \/><label for='answer-id-22083' id='answer-label-22083' class=' answer'><span>AND<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5553[]' id='answer-id-22084' class='answer   answerof-5553  ' value='22084'   \/><label for='answer-id-22084' id='answer-label-22084' class=' answer'><span>NAND<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5553[]' id='answer-id-22085' class='answer   answerof-5553  ' value='22085'   \/><label for='answer-id-22085' id='answer-label-22085' class=' answer'><span>OR<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5553[]' id='answer-id-22086' class='answer   answerof-5553  ' value='22086'   \/><label for='answer-id-22086' id='answer-label-22086' class=' answer'><span>XOR<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-11' style=';'><div id='questionWrap-11'  class='   watupro-question-id-5554'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>11. <\/span>You are required to choose the correct one out of the given five responses and mark it as<br \/>\r\n<br \/>\r\n(a) If both assertion and reason are true and reason is the correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(b) If both assertion and reason are true but reason is not correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(c) If assertion is true, but reason is false.<br \/>\r\n<br \/>\r\n(d) If both assertion and reason are false.<br \/>\r\n<br \/>\r\n(e) If reason is true but assertion is false<br \/>\r\n<br \/>\r\n<strong>Assertion<\/strong>: A transistor amplifier in common emitter configuration has a low input impedance.<br \/>\r\n<br \/>\r\n<strong>Reason<\/strong>: The base to emitter region is forward biased<br \/>\r\n<br \/>\r\n&nbsp;<\/div><input type='hidden' name='question_id[]' id='qID_11' value='5554' class='watupro-question-id'\/><input type='hidden' id='answerType5554' class='answerTypeCnt11' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5554'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5554[]' id='answer-id-22087' class='answer   answerof-5554  ' value='22087'   \/><label for='answer-id-22087' id='answer-label-22087' class=' answer'><span>a<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5554[]' id='answer-id-22088' class='answer   answerof-5554  ' value='22088'   \/><label for='answer-id-22088' id='answer-label-22088' class=' answer'><span>b<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5554[]' id='answer-id-22089' class='answer   answerof-5554  ' value='22089'   \/><label for='answer-id-22089' id='answer-label-22089' class=' answer'><span>c<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5554[]' id='answer-id-22090' class='answer   answerof-5554  ' value='22090'   \/><label for='answer-id-22090' id='answer-label-22090' class=' answer'><span>d<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5554[]' id='answer-id-22091' class='answer   answerof-5554  ' value='22091'   \/><label for='answer-id-22091' id='answer-label-22091' class=' answer'><span>e<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-12' style=';'><div id='questionWrap-12'  class='   watupro-question-id-5555'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>12. <\/span>You are required to choose the correct one out of the given five responses and mark it as<br \/>\r\n<br \/>\r\n(a) If both assertion and reason are true and reason is the correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(b) If both assertion and reason are true but reason is not correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(c) If assertion is true, but reason is false.<br \/>\r\n<br \/>\r\n(d) If both assertion and reason are false.<br \/>\r\n<br \/>\r\n(e) If reason is true but assertion is false<br \/>\r\n<br \/>\r\n<strong>Assertion<\/strong>: Insulators do not allow flow of current through themselves.<br \/>\r\n<br \/>\r\n<strong>Reason:<\/strong> They have no free charge carriers.<br \/>\r\n<br \/>\r\n&nbsp;<\/div><input type='hidden' name='question_id[]' id='qID_12' value='5555' class='watupro-question-id'\/><input type='hidden' id='answerType5555' class='answerTypeCnt12' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5555'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5555[]' id='answer-id-22092' class='answer   answerof-5555  ' value='22092'   \/><label for='answer-id-22092' id='answer-label-22092' class=' answer'><span>a<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5555[]' id='answer-id-22093' class='answer   answerof-5555  ' value='22093'   \/><label for='answer-id-22093' id='answer-label-22093' class=' answer'><span>b<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5555[]' id='answer-id-22094' class='answer   answerof-5555  ' value='22094'   \/><label for='answer-id-22094' id='answer-label-22094' class=' answer'><span>c<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5555[]' id='answer-id-22095' class='answer   answerof-5555  ' value='22095'   \/><label for='answer-id-22095' id='answer-label-22095' class=' answer'><span>d<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5555[]' id='answer-id-22096' class='answer   answerof-5555  ' value='22096'   \/><label for='answer-id-22096' id='answer-label-22096' class=' answer'><span>e<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-13' style=';'><div id='questionWrap-13'  class='   watupro-question-id-5556'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>13. <\/span>You are required to choose the correct one out of the given five responses and mark it as<br \/>\r\n<br \/>\r\n(a) If both assertion and reason are true and reason is the correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(b) If both assertion and reason are true but reason is not correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(c) If assertion is true, but reason is false.<br \/>\r\n<br \/>\r\n(d) If both assertion and reason are false.<br \/>\r\n<br \/>\r\n(e) If reason is true but assertion is false<br \/>\r\n<br \/>\r\n<strong>Assertion<\/strong>: A pure semiconductor has a negative temperature coefficient of resistance.<br \/>\r\n<br \/>\r\n<strong>Reason<\/strong>: On raising the temperature, more charge carriers are released, conductance increases and resistance decreases.<\/div><input type='hidden' name='question_id[]' id='qID_13' value='5556' class='watupro-question-id'\/><input type='hidden' id='answerType5556' class='answerTypeCnt13' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5556'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5556[]' id='answer-id-22097' class='answer   answerof-5556  ' value='22097'   \/><label for='answer-id-22097' id='answer-label-22097' class=' answer'><span>a<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5556[]' id='answer-id-22098' class='answer   answerof-5556  ' value='22098'   \/><label for='answer-id-22098' id='answer-label-22098' class=' answer'><span>b<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5556[]' id='answer-id-22099' class='answer   answerof-5556  ' value='22099'   \/><label for='answer-id-22099' id='answer-label-22099' class=' answer'><span>c<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5556[]' id='answer-id-22100' class='answer   answerof-5556  ' value='22100'   \/><label for='answer-id-22100' id='answer-label-22100' class=' answer'><span>d<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5556[]' id='answer-id-22101' class='answer   answerof-5556  ' value='22101'   \/><label for='answer-id-22101' id='answer-label-22101' class=' answer'><span>e<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-14' style=';'><div id='questionWrap-14'  class='   watupro-question-id-5557'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>14. <\/span>You are required to choose the correct one out of the given five responses and mark it as<br \/>\r\n<br \/>\r\n(a) If both assertion and reason are true and reason is the correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(b) If both assertion and reason are true but reason is not correct explanation of the assertion.<br \/>\r\n<br \/>\r\n(c) If assertion is true, but reason is false.<br \/>\r\n<br \/>\r\n(d) If both assertion and reason are false.<br \/>\r\n<br \/>\r\n(e) If reason is true but assertion is false<br \/>\r\n<br \/>\r\n<strong>Assertion<\/strong>: NAND is a universal gate.<br \/>\r\n<br \/>\r\n<strong>Reason<\/strong>: It can be used to describe all other logic gates.<br \/>\r\n<br \/>\r\n&nbsp;<\/div><input type='hidden' name='question_id[]' id='qID_14' value='5557' class='watupro-question-id'\/><input type='hidden' id='answerType5557' class='answerTypeCnt14' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5557'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5557[]' id='answer-id-22102' class='answer   answerof-5557  ' value='22102'   \/><label for='answer-id-22102' id='answer-label-22102' class=' answer'><span>a<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5557[]' id='answer-id-22103' class='answer   answerof-5557  ' value='22103'   \/><label for='answer-id-22103' id='answer-label-22103' class=' answer'><span>b<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5557[]' id='answer-id-22104' class='answer   answerof-5557  ' value='22104'   \/><label for='answer-id-22104' id='answer-label-22104' class=' answer'><span>c<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5557[]' id='answer-id-22105' class='answer   answerof-5557  ' value='22105'   \/><label for='answer-id-22105' id='answer-label-22105' class=' answer'><span>d<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5557[]' id='answer-id-22106' class='answer   answerof-5557  ' value='22106'   \/><label for='answer-id-22106' id='answer-label-22106' class=' answer'><span>e<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-15' style=';'><div id='questionWrap-15'  class='   watupro-question-id-5558'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>15. <\/span>A forward biased diode is<br \/>\r\n<br \/>\r\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1977\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2021\/07\/class12-semiconductor-mcq-2.png\" alt=\"\" width=\"313\" height=\"166\" \/><\/div><input type='hidden' name='question_id[]' id='qID_15' value='5558' class='watupro-question-id'\/><input type='hidden' id='answerType5558' class='answerTypeCnt15' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5558'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5558[]' id='answer-id-22107' class='answer   answerof-5558  ' value='22107'   \/><label for='answer-id-22107' id='answer-label-22107' class=' answer'><span>a<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5558[]' id='answer-id-22108' class='answer   answerof-5558  ' value='22108'   \/><label for='answer-id-22108' id='answer-label-22108' class=' answer'><span>b<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5558[]' id='answer-id-22109' class='answer   answerof-5558  ' value='22109'   \/><label for='answer-id-22109' id='answer-label-22109' class=' answer'><span>c<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5558[]' id='answer-id-22110' class='answer   answerof-5558  ' value='22110'   \/><label for='answer-id-22110' id='answer-label-22110' class=' answer'><span>d<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-16' style=';'><div id='questionWrap-16'  class='   watupro-question-id-5559'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>16. <\/span>The circuit as shown in figure, the equivalent gate is<br \/>\r\n<br \/>\r\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1978\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2021\/07\/class12-semiconductor-mcq-3.png\" alt=\"\" width=\"448\" height=\"85\" \/><\/div><input type='hidden' name='question_id[]' id='qID_16' value='5559' class='watupro-question-id'\/><input type='hidden' id='answerType5559' class='answerTypeCnt16' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5559'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5559[]' id='answer-id-22111' class='answer   answerof-5559  ' value='22111'   \/><label for='answer-id-22111' id='answer-label-22111' class=' answer'><span>NOR gate <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5559[]' id='answer-id-22112' class='answer   answerof-5559  ' value='22112'   \/><label for='answer-id-22112' id='answer-label-22112' class=' answer'><span>OR gate <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5559[]' id='answer-id-22113' class='answer   answerof-5559  ' value='22113'   \/><label for='answer-id-22113' id='answer-label-22113' class=' answer'><span>AND gate <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5559[]' id='answer-id-22114' class='answer   answerof-5559  ' value='22114'   \/><label for='answer-id-22114' id='answer-label-22114' class=' answer'><span>NAND gate<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-17' style=';'><div id='questionWrap-17'  class='   watupro-question-id-5560'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>17. <\/span>The probability of electrons to be found in the conduction band of an intrinsic semiconductor at a finite temperature<\/div><input type='hidden' name='question_id[]' id='qID_17' value='5560' class='watupro-question-id'\/><input type='hidden' id='answerType5560' class='answerTypeCnt17' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5560'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5560[]' id='answer-id-22115' class='answer   answerof-5560  ' value='22115'   \/><label for='answer-id-22115' id='answer-label-22115' class=' answer'><span>increase exponentially with increasing band gap  <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5560[]' id='answer-id-22116' class='answer   answerof-5560  ' value='22116'   \/><label for='answer-id-22116' id='answer-label-22116' class=' answer'><span>decrease exponentially with increasing band gap  <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5560[]' id='answer-id-22117' class='answer   answerof-5560  ' value='22117'   \/><label for='answer-id-22117' id='answer-label-22117' class=' answer'><span>decreases with increasing temperature <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5560[]' id='answer-id-22118' class='answer   answerof-5560  ' value='22118'   \/><label for='answer-id-22118' id='answer-label-22118' class=' answer'><span>is independent of the temperature and the band gap.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-18' style=';'><div id='questionWrap-18'  class='   watupro-question-id-5561'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>18. <\/span>The manifestation of band structure in solids is due to<\/div><input type='hidden' name='question_id[]' id='qID_18' value='5561' class='watupro-question-id'\/><input type='hidden' id='answerType5561' class='answerTypeCnt18' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5561'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5561[]' id='answer-id-22119' class='answer   answerof-5561  ' value='22119'   \/><label for='answer-id-22119' id='answer-label-22119' class=' answer'><span>Heisenberg's uncertainty principle<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5561[]' id='answer-id-22120' class='answer   answerof-5561  ' value='22120'   \/><label for='answer-id-22120' id='answer-label-22120' class=' answer'><span>Pauli's exclusion principle<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5561[]' id='answer-id-22121' class='answer   answerof-5561  ' value='22121'   \/><label for='answer-id-22121' id='answer-label-22121' class=' answer'><span>Bohr's correspondence principle <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5561[]' id='answer-id-22122' class='answer   answerof-5561  ' value='22122'   \/><label for='answer-id-22122' id='answer-label-22122' class=' answer'><span>Boltzmann's law<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-19' style=';'><div id='questionWrap-19'  class='   watupro-question-id-5562'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>19. <\/span>If collector current is 120 mA and base current is 2 mA and resistance gain is 3, what is power gain?<\/div><input type='hidden' name='question_id[]' id='qID_19' value='5562' class='watupro-question-id'\/><input type='hidden' id='answerType5562' class='answerTypeCnt19' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5562'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5562[]' id='answer-id-22123' class='answer   answerof-5562  ' value='22123'   \/><label for='answer-id-22123' id='answer-label-22123' class=' answer'><span>180 <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5562[]' id='answer-id-22124' class='answer   answerof-5562  ' value='22124'   \/><label for='answer-id-22124' id='answer-label-22124' class=' answer'><span>10800<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5562[]' id='answer-id-22125' class='answer   answerof-5562  ' value='22125'   \/><label for='answer-id-22125' id='answer-label-22125' class=' answer'><span>1.8 <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5562[]' id='answer-id-22126' class='answer   answerof-5562  ' value='22126'   \/><label for='answer-id-22126' id='answer-label-22126' class=' answer'><span>18<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-20' style=';'><div id='questionWrap-20'  class='   watupro-question-id-5563'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>20. <\/span>The gate for which output is high if at least one input is low<\/div><input type='hidden' name='question_id[]' id='qID_20' value='5563' class='watupro-question-id'\/><input type='hidden' id='answerType5563' class='answerTypeCnt20' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices5563'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5563[]' id='answer-id-22127' class='answer   answerof-5563  ' value='22127'   \/><label for='answer-id-22127' id='answer-label-22127' class=' answer'><span>AND<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5563[]' id='answer-id-22128' class='answer   answerof-5563  ' value='22128'   \/><label for='answer-id-22128' id='answer-label-22128' class=' answer'><span>NOR<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5563[]' id='answer-id-22129' class='answer   answerof-5563  ' value='22129'   \/><label for='answer-id-22129' id='answer-label-22129' class=' answer'><span>NAND<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-5563[]' id='answer-id-22130' class='answer   answerof-5563  ' value='22130'   \/><label for='answer-id-22130' id='answer-label-22130' class=' answer'><span>OR<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style='display:none' id='question-21'>\n\t<div class='question-content'>\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\" \/>&nbsp;Loading...\t<\/div>\n<\/div>\n\n<br 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