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State the safe limit of sound level in t...

State the safe limit of sound level in terms of decibel for human hearing.

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below 80 dB
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ICSE-SOUND-EXERCISE -7(C )
  1. The outer case of the bell in a temple is made big. Give a reason.

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  2. Name the unit used for measuring the sound level.

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  3. State the safe limit of sound level in terms of decibel for human hear...

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  4. What is meant by noise pollution? Name one source of sound causing noi...

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  5. State one factor which determine pitch of sound.

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  6. Name the subjective property of sound related to its frequency

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  7. Name and define the characteristic which enables one to distinguish tw...

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  8. Draw a diagram to show the wave pattern of a pitch note and a low pitc...

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  9. How is it possible to detect the filling of a bottle under a water tap...

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  10. The frequencies of notes given by flute, guitar and trumpet are respec...

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  11. Complete the following sentences : The pitch of sound increases if...

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  12. Complete the following sentences : If the amplitude of a sound is h...

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  13. The diagram below shows three different modes of vibration P, Q and R ...

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  14. The diagram below shows three different modes of vibration P, Q and R ...

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  15. The diagram below shows three different modes of vibration P, Q and R ...

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  16. Name the characteristic which differentiates two sounds of the same pi...

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  17. How does the two sounds of same loudness and same pitch produced by di...

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  18. Two identical guitars are played by two persons to give notes of the s...

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  19. Two musical notes of the same pitch and same loudness are played on tw...

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  20. Which characteristic of sound, makes it possible to recognize a person...

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