{"id":3914,"date":"2025-11-29T15:27:37","date_gmt":"2025-11-29T15:27:37","guid":{"rendered":"https:\/\/physicscatalyst.com\/testprep\/class-7-science\/light-shadows-and-reflections-class-7-mcq\/"},"modified":"2025-11-29T15:27:37","modified_gmt":"2025-11-29T15:27:37","slug":"light-shadows-and-reflections-class-7-mcq","status":"publish","type":"post","link":"https:\/\/physicscatalyst.com\/testprep\/class-7-science\/light-shadows-and-reflections-class-7-mcq\/","title":{"rendered":"Light Shadows and Reflections class 7 MCQ"},"content":{"rendered":"<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=\"submittingExam493\" 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-493\"><p><strong>General Instructions<\/strong><\/p>\n<ul>\n<li>Your test contains multiple-choice questions with only one answer-type question. There are a total of 15 questions<\/li>\n<li>This is a 20 min test. Please make sure you complete it in the stipulated time<\/li>\n<li>You can finish this test any time using the <span style=\"color: #ff0000;\"><strong>'Submit'<\/strong><\/span> button.<\/li>\n<\/ul>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-493\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-8356'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>In a plane mirror<\/div><input type='hidden' name='question_id[]' id='qID_1' value='8356' class='watupro-question-id'\/><input type='hidden' id='answerType8356' class='answerTypeCnt1' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8356'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8356[]' id='answer-id-33374' class='answer   answerof-8356  ' value='33374'   \/><label for='answer-id-33374' id='answer-label-33374' class=' answer'><span>image formed is erect<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8356[]' id='answer-id-33375' class='answer   answerof-8356  ' value='33375'   \/><label for='answer-id-33375' id='answer-label-33375' class=' answer'><span>image formed is same size<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8356[]' id='answer-id-33376' class='answer   answerof-8356  ' value='33376'   \/><label for='answer-id-33376' id='answer-label-33376' class=' answer'><span>laterally inverted<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8356[]' id='answer-id-33377' class='answer   answerof-8356  ' value='33377'   \/><label for='answer-id-33377' id='answer-label-33377' class=' answer'><span>All the above<\/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-8357'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>Which of these will not formed a shadow<\/div><input type='hidden' name='question_id[]' id='qID_2' value='8357' class='watupro-question-id'\/><input type='hidden' id='answerType8357' class='answerTypeCnt2' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8357'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8357[]' id='answer-id-33378' class='answer   answerof-8357  ' value='33378'   \/><label for='answer-id-33378' id='answer-label-33378' class=' answer'><span>A Man<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8357[]' id='answer-id-33379' class='answer   answerof-8357  ' value='33379'   \/><label for='answer-id-33379' id='answer-label-33379' class=' answer'><span>A car<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8357[]' id='answer-id-33380' class='answer   answerof-8357  ' value='33380'   \/><label for='answer-id-33380' id='answer-label-33380' class=' answer'><span>A cloud<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8357[]' id='answer-id-33381' class='answer   answerof-8357  ' value='33381'   \/><label for='answer-id-33381' id='answer-label-33381' class=' answer'><span>Clear glass<\/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-8358'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>Which is of these is incorrect<\/div><input type='hidden' name='question_id[]' id='qID_3' value='8358' class='watupro-question-id'\/><input type='hidden' id='answerType8358' class='answerTypeCnt3' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8358'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8358[]' id='answer-id-33382' class='answer   answerof-8358  ' value='33382'   \/><label for='answer-id-33382' id='answer-label-33382' class=' answer'><span>Light travels in the straight line<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8358[]' id='answer-id-33383' class='answer   answerof-8358  ' value='33383'   \/><label for='answer-id-33383' id='answer-label-33383' class=' answer'><span>A shadow shows the color of the object<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8358[]' id='answer-id-33384' class='answer   answerof-8358  ' value='33384'   \/><label for='answer-id-33384' id='answer-label-33384' class=' answer'><span>An opaque object will produce the shadow<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8358[]' id='answer-id-33385' class='answer   answerof-8358  ' value='33385'   \/><label for='answer-id-33385' id='answer-label-33385' class=' answer'><span>None of these<\/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-8359'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>which of the following letters will remain unchanged even after lateral inversion<\/div><input type='hidden' name='question_id[]' id='qID_4' value='8359' class='watupro-question-id'\/><input type='hidden' id='answerType8359' class='answerTypeCnt4' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8359'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8359[]' id='answer-id-33386' class='answer   answerof-8359  ' value='33386'   \/><label for='answer-id-33386' id='answer-label-33386' class=' answer'><span>G<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8359[]' id='answer-id-33387' class='answer   answerof-8359  ' value='33387'   \/><label for='answer-id-33387' id='answer-label-33387' class=' answer'><span>K<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8359[]' id='answer-id-33388' class='answer   answerof-8359  ' value='33388'   \/><label for='answer-id-33388' id='answer-label-33388' class=' answer'><span>A<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8359[]' id='answer-id-33389' class='answer   answerof-8359  ' value='33389'   \/><label for='answer-id-33389' id='answer-label-33389' class=' answer'><span>C<\/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-8360'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>Image formed by Pin-hole Camera is<\/div><input type='hidden' name='question_id[]' id='qID_5' value='8360' class='watupro-question-id'\/><input type='hidden' id='answerType8360' class='answerTypeCnt5' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8360'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8360[]' id='answer-id-33390' class='answer   answerof-8360  ' value='33390'   \/><label for='answer-id-33390' id='answer-label-33390' class=' answer'><span>Erect<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8360[]' id='answer-id-33391' class='answer   answerof-8360  ' value='33391'   \/><label for='answer-id-33391' id='answer-label-33391' class=' answer'><span>Inverted<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8360[]' id='answer-id-33392' class='answer   answerof-8360  ' value='33392'   \/><label for='answer-id-33392' id='answer-label-33392' class=' answer'><span>Sometimes erect, sometimes inverted<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8360[]' id='answer-id-33393' class='answer   answerof-8360  ' value='33393'   \/><label for='answer-id-33393' id='answer-label-33393' class=' answer'><span>none of these<\/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-8361'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>Which of the following statement is true<\/div><input type='hidden' name='question_id[]' id='qID_6' value='8361' class='watupro-question-id'\/><input type='hidden' id='answerType8361' class='answerTypeCnt6' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8361'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8361[]' id='answer-id-33394' class='answer   answerof-8361  ' value='33394'   \/><label for='answer-id-33394' id='answer-label-33394' class=' answer'><span>Moon is a luminous body<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8361[]' id='answer-id-33395' class='answer   answerof-8361  ' value='33395'   \/><label for='answer-id-33395' id='answer-label-33395' class=' answer'><span>Shadow of colored object is colored<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8361[]' id='answer-id-33396' class='answer   answerof-8361  ' value='33396'   \/><label for='answer-id-33396' id='answer-label-33396' class=' answer'><span>Mirror do the reflection of light<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8361[]' id='answer-id-33397' class='answer   answerof-8361  ' value='33397'   \/><label for='answer-id-33397' id='answer-label-33397' class=' answer'><span>None of these<\/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-8362'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>which of the following letters will get changed after lateral inversion<\/div><input type='hidden' name='question_id[]' id='qID_7' value='8362' class='watupro-question-id'\/><input type='hidden' id='answerType8362' class='answerTypeCnt7' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8362'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8362[]' id='answer-id-33398' class='answer   answerof-8362  ' value='33398'   \/><label for='answer-id-33398' id='answer-label-33398' class=' answer'><span>U<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8362[]' id='answer-id-33399' class='answer   answerof-8362  ' value='33399'   \/><label for='answer-id-33399' id='answer-label-33399' class=' answer'><span>M<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8362[]' id='answer-id-33400' class='answer   answerof-8362  ' value='33400'   \/><label for='answer-id-33400' id='answer-label-33400' class=' answer'><span>A<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8362[]' id='answer-id-33401' class='answer   answerof-8362  ' value='33401'   \/><label for='answer-id-33401' id='answer-label-33401' class=' answer'><span>E<\/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-8363'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>Which of the statement about light is correct?<\/div><input type='hidden' name='question_id[]' id='qID_8' value='8363' class='watupro-question-id'\/><input type='hidden' id='answerType8363' class='answerTypeCnt8' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8363'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8363[]' id='answer-id-33402' class='answer   answerof-8363  ' value='33402'   \/><label for='answer-id-33402' id='answer-label-33402' class=' answer'><span>The image formed on the screen of a pin hole camera is erect.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8363[]' id='answer-id-33403' class='answer   answerof-8363  ' value='33403'   \/><label for='answer-id-33403' id='answer-label-33403' class=' answer'><span>Light ray incident on a mirror can be reflected.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8363[]' id='answer-id-33404' class='answer   answerof-8363  ' value='33404'   \/><label for='answer-id-33404' id='answer-label-33404' class=' answer'><span>Opaque objects emit light of their own.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8363[]' id='answer-id-33405' class='answer   answerof-8363  ' value='33405'   \/><label for='answer-id-33405' id='answer-label-33405' class=' answer'><span>None of the above<\/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-8364'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>Two students while sitting across a table looked down on to its top surface. They noticed that they could see their own and each other\u2019s image. The table top is likely to be made of:<\/div><input type='hidden' name='question_id[]' id='qID_9' value='8364' class='watupro-question-id'\/><input type='hidden' id='answerType8364' class='answerTypeCnt9' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8364'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8364[]' id='answer-id-33406' class='answer   answerof-8364  ' value='33406'   \/><label for='answer-id-33406' id='answer-label-33406' class=' answer'><span>unpolished wood<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8364[]' id='answer-id-33407' class='answer   answerof-8364  ' value='33407'   \/><label for='answer-id-33407' id='answer-label-33407' class=' answer'><span>wood top covered with cloth<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8364[]' id='answer-id-33408' class='answer   answerof-8364  ' value='33408'   \/><label for='answer-id-33408' id='answer-label-33408' class=' answer'><span>glass sheet<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8364[]' id='answer-id-33409' class='answer   answerof-8364  ' value='33409'   \/><label for='answer-id-33409' id='answer-label-33409' class=' answer'><span>None of the above<\/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-8365'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span><div class=\"show-question-content\">Which of the following statement is TRUE?<\/div>&nbsp;<br \/>\r\n<div class=\"show-question-choices \"><\/div><\/div><input type='hidden' name='question_id[]' id='qID_10' value='8365' class='watupro-question-id'\/><input type='hidden' id='answerType8365' class='answerTypeCnt10' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8365'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8365[]' id='answer-id-33410' class='answer   answerof-8365  ' value='33410'   \/><label for='answer-id-33410' id='answer-label-33410' class=' answer'><span>The colour of the shadow of an object depends on its colour of the object<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8365[]' id='answer-id-33411' class='answer   answerof-8365  ' value='33411'   \/><label for='answer-id-33411' id='answer-label-33411' class=' answer'><span>Images are very different from shadows.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8365[]' id='answer-id-33412' class='answer   answerof-8365  ' value='33412'   \/><label for='answer-id-33412' id='answer-label-33412' class=' answer'><span>Transparent objects allow light to pass through them partially<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8365[]' id='answer-id-33413' class='answer   answerof-8365  ' value='33413'   \/><label for='answer-id-33413' id='answer-label-33413' class=' answer'><span>Translucent objects allow light to pass through them fully<\/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-8366'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>11. <\/span>Three identical clothes of orange, blue and green colour are hanging on a clothes line in the sun. What would be the colour of shadows of these towels?<\/div><input type='hidden' name='question_id[]' id='qID_11' value='8366' class='watupro-question-id'\/><input type='hidden' id='answerType8366' class='answerTypeCnt11' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8366'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8366[]' id='answer-id-33414' class='answer   answerof-8366  ' value='33414'   \/><label for='answer-id-33414' id='answer-label-33414' class=' answer'><span>orange, blue and green<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8366[]' id='answer-id-33415' class='answer   answerof-8366  ' value='33415'   \/><label for='answer-id-33415' id='answer-label-33415' class=' answer'><span>blue, orange and green<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8366[]' id='answer-id-33416' class='answer   answerof-8366  ' value='33416'   \/><label for='answer-id-33416' id='answer-label-33416' class=' answer'><span>green, blue and orange<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8366[]' id='answer-id-33417' class='answer   answerof-8366  ' value='33417'   \/><label for='answer-id-33417' id='answer-label-33417' class=' answer'><span>All will have same colour<\/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-8367'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>12. <\/span>Reflection does not take place from a<\/div><input type='hidden' name='question_id[]' id='qID_12' value='8367' class='watupro-question-id'\/><input type='hidden' id='answerType8367' class='answerTypeCnt12' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8367'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8367[]' id='answer-id-33418' class='answer   answerof-8367  ' value='33418'   \/><label for='answer-id-33418' id='answer-label-33418' class=' answer'><span>mirror<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8367[]' id='answer-id-33419' class='answer   answerof-8367  ' value='33419'   \/><label for='answer-id-33419' id='answer-label-33419' class=' answer'><span>undisturbed water<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8367[]' id='answer-id-33420' class='answer   answerof-8367  ' value='33420'   \/><label for='answer-id-33420' id='answer-label-33420' class=' answer'><span>book<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8367[]' id='answer-id-33421' class='answer   answerof-8367  ' value='33421'   \/><label for='answer-id-33421' id='answer-label-33421' class=' answer'><span>polished metal plate<\/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-8368'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>13. <\/span>Out of these, which one is not a man-made luminous body?<\/div><input type='hidden' name='question_id[]' id='qID_13' value='8368' class='watupro-question-id'\/><input type='hidden' id='answerType8368' class='answerTypeCnt13' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8368'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8368[]' id='answer-id-33422' class='answer   answerof-8368  ' value='33422'   \/><label for='answer-id-33422' id='answer-label-33422' class=' answer'><span>Electric bulb<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8368[]' id='answer-id-33423' class='answer   answerof-8368  ' value='33423'   \/><label for='answer-id-33423' id='answer-label-33423' class=' answer'><span>Burning candle<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8368[]' id='answer-id-33424' class='answer   answerof-8368  ' value='33424'   \/><label for='answer-id-33424' id='answer-label-33424' class=' answer'><span>Firefly<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8368[]' id='answer-id-33425' class='answer   answerof-8368  ' value='33425'   \/><label for='answer-id-33425' id='answer-label-33425' class=' answer'><span>Oil lamp<\/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-8369'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>14. <\/span>Which of the following is always not a necessary to observe a shadow?<\/div><input type='hidden' name='question_id[]' id='qID_14' value='8369' class='watupro-question-id'\/><input type='hidden' id='answerType8369' class='answerTypeCnt14' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8369'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8369[]' id='answer-id-33426' class='answer   answerof-8369  ' value='33426'   \/><label for='answer-id-33426' id='answer-label-33426' class=' answer'><span>Opaque object<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8369[]' id='answer-id-33427' class='answer   answerof-8369  ' value='33427'   \/><label for='answer-id-33427' id='answer-label-33427' class=' answer'><span>Screen<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8369[]' id='answer-id-33428' class='answer   answerof-8369  ' value='33428'   \/><label for='answer-id-33428' id='answer-label-33428' class=' answer'><span>Sun<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8369[]' id='answer-id-33429' class='answer   answerof-8369  ' value='33429'   \/><label for='answer-id-33429' id='answer-label-33429' class=' answer'><span>Source of light<\/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-8370'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>15. <\/span>Which of the following is translucent?<\/div><input type='hidden' name='question_id[]' id='qID_15' value='8370' class='watupro-question-id'\/><input type='hidden' id='answerType8370' class='answerTypeCnt15' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8370'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8370[]' id='answer-id-33430' class='answer   answerof-8370  ' value='33430'   \/><label for='answer-id-33430' id='answer-label-33430' class=' answer'><span>fog<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8370[]' id='answer-id-33431' class='answer   answerof-8370  ' value='33431'   \/><label for='answer-id-33431' id='answer-label-33431' class=' answer'><span>Sheet of polythene<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8370[]' id='answer-id-33432' class='answer   answerof-8370  ' value='33432'   \/><label for='answer-id-33432' id='answer-label-33432' class=' answer'><span>book<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8370[]' id='answer-id-33433' class='answer   answerof-8370  ' value='33433'   \/><label for='answer-id-33433' id='answer-label-33433' class=' answer'><span>Smoke<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style='display:none' id='question-16'>\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 \/>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons493\" >\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" 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