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Which of these is a good reflector of so...

Which of these is a good reflector of sound ?

A

Curtain

B

Dogs

C

Gunny bag

D

Wall

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The correct Answer is:
d
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  1. What does 'SONAR' stand for ?

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  2. What is the process by which bats use sound waves to estimate the posi...

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  3. Which of these is a good reflector of sound ?

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  4. What is the frequency range of infrasound ?

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  5. What is the frequency range of ultrasound ?

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  6. What do you call range of sound that is audible to human beings ?

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  7. Which option correctly describes cochlea in human beings ?

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  8. What is the common name of malleus bone in human beings ?

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  9. Which of these constitutes outer ear in human beings ?

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  10. Which factor deeides strength of a sound wave ?

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  11. Which of these is necessary for a wave to occur ?

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  12. Which molecules are pushed closer to gether during compression of soun...

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  13. What is the function of the narrow slit in the vocal cords of larynx ?

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  14. Where is larynx located in human beings ?

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  15. Which organ helps in generating sound in human beings ?

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  16. What is the frequency of a simple pendulum that completes 10 oscilati...

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  17. On what factor does the pitch of sound depend ?

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  18. What is the position of the bod of a simple pen-dulum at rest called ?

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  19. Which option correctly describes a tuning fork ?

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  20. Which of these shows an oscillatory motion ?

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