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What is the use of a megaphone?...

What is the use of a megaphone?

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MODERN PUBLICATION-SOUND-EXERCISE
  1. Give two examples in which a vibrating object produces sound.

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  2. What is a Stethoscope? How does it work?

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  3. What is the use of a megaphone?

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  4. Give some properties of ultrasound.

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  5. What are the uses of ultrasonic sound?

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  6. Make a list of different types of musical instruments and find the par...

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  7. Define the term time-period of a wave.

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  8. Give relation among the speed of sound v, wavelength lambda and freque...

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  9. A sound wave travels at a speed of 339 ms^-1. If its wavelength is 1.5...

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  10. An echo is returned in 6 seconds. What is the distance of the reflecti...

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  11. 20 waves pass through a point in 2 seconds. If the distance between on...

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  12. 20 waves pass through a point in 2 seconds. If the distance between on...

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  13. Sound is produced when school bell is struck with a hammer. Why?

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  14. Which characteristic of the sound help you to identify your friend by ...

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  15. A body is vibrating 6000 times in one miute. If the velocity of sound ...

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  16. A body is vibrating 6000 times in one miute. If the velocity of sound ...

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  17. What is echo ranging? State one application of this technique.

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  18. Differentiate between transverse waves and longitudinal waves.

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  19. What are importat characterstics of wave? Define them.

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  20. List three factors which influence water potential.

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