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A stone is dropped from the top of a tow...

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top ? Given, `g = 10ms^-2` and speed of sound = `340 ms^-1`.

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PSEB-SOUND-EXERCISE
  1. Cite an experiment to show that sound need a material medium for its p...

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  2. Why is sound wave called longitudinal wave?

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

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  4. Flash and thunder are produced simultaneously. But thunder is heard a...

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  5. A person has a hearing range from 20 Hz to 20 KHz. What is the typical...

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  6. Two children are at opposite ends of an aluminium rod. One strikes the...

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  7. The frequency of source of sound is 100 Hz. How many times does it vib...

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  8. Does sound follow the same laws of reflection as light does ? Explain.

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

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

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

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

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

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  14. Cite an experiment to show that sound need a material medium for its p...

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  15. Explain how bats use ultrasounds to catch a prey ?

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  16. How is ultrasound used for cleaning ?

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  17. Explain the working and applications of SONAR.

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

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

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  20. Explain how the human ear works.

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