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Test Series-29




Instructions

  • Your test contains 10 multiple choice questions with only one answer
  • This is 30 min test.Please make sure you complete it in stipulated time
  • You can Finish this test any time using 'Submit' button.
  • Once finished you get a chance to review all question with correct answers and their solutions.


1.Sound can not travel through?
  • Steel
  • water
  • air
  • Vaccum

2) which of these is true
  • Sound waves are longitudinal
  • Sound travel faster in steel than air
  • A sound wave consists of places of higher pression called compression and place of lower pressure called rarefaction
  • All the above

3. Which of these are high velocity ?
  • Sound velocity in dry air at 0 C
  • Sound velocity in dry air at 10 C
  • Sound velocity in dry air at 20 C
  • None of the above

4.What is the name of short duration wave?
  • wavelength
  • timeperiod
  • frequency
  • pulse

5. which of these are not true?
  • The inner ear consists of a cochlea, the semicircular canals, and the auditory nerve.
  • The middle ear is an air-filled cavity that consists of an eardrum and three tiny, interconnected bones - the hammer, anvil, and stirrup
  • The Human Ear consists of three basic parts - the outer ear, the middle ear, and the inner ear.
  • None of these

6. Pitch of high frequency sound is ?
  • low
  • high
  • zero
  • infinite

7. why cant we hear the scream of the bat?
  • Because it scream consist of infrasonic sound
  • Because it scream consist of ultrasonic sound
  • None of these

8. A man claps his hands near a mountain and hears the echo in 6 sec. If the distance of the mountain in 990 m. What is the speed of the sound?
  • 330m/s
  • 340 m/s
  • 325 m/s
  • 350 m/s

9. The ceilings of concert halls and conference halls made curved why?
  • This way sound waves reaches all the part after reflection from the curved surface
  • This way sound does not become distorted and confusing
  • This way reverberation is avoided
  • None of these

10.two statement Statement A: Loudness of sound depends on amplitude Statement B: Quality of the sound depends on waveform
  • A is correct only
  • B is correct only
  • A and B both are correct
  • A and B both are incorrect



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