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Give two practical applications of refle...

Give two practical applications of reflection of sound waves.

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R G PUBLICATION-SOUND-EXAMPLE
  1. Does sound follow the same laws of reflection as light does? Explain?

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  2. When a sound is reflected from a distant object, an echo is produced. ...

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  3. Give two practical applications of reflection of sound waves.

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  4. A stone is dropped from the top of a tower 500 m high into a pond of w...

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  5. A sound wave travels at a speed of 339 m s^-1. If its wavelength is 1....

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  6. What is reverberation? How can it be reduced?

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  7. What is loudness of sound? What factors does it depend on?

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  8. Explain how bats use ultrasound to catch a prey.

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  9. How is ultrasound used for cleaning?

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  10. Explain how defects in a metal block can be detected using ultrasound.

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  11. A sonar device on a submarine sends out a signal and receives an echo ...

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  12. Explain how defects in a metal block can be detected using ultrasound.

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  13. Explain how the human ear works.

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  14. A body vibrates 10 times per second. The time period of the body is

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  15. Choose the wrong statement-

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  16. The frequencies and velocities of two waves are equal. If wavelengths ...

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  17. The distance between two consecutive compressions (c ) or two consecut...

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  18. At the place of compession

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  19. At the place of rarefraction

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  20. The relation between frequency (upsilon) and time period (T) is

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