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What is sound and how is it produced ?...

What is sound and how is it produced ?

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Sound is a from of energy and it is produced due to vibrations of different types of object, e.g.,a vibrating tuning fork, a bell wires in a sitar and violin etc.
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Knowledge Check

  • The sound in human is produced by

    A
    heart
    B
    mouth
    C
    larynx
    D
    hair
    • PRADEEP-SOUND-NCERT Exercise
    1. What is sound and how is it produced ?

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    2. Describe with the help of a diagram, how compressions and rarefactions...

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    3. Cite an experiment to show that sound needs a meterial for its propaga...

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    4. Why is sound wave called a longitudinal wave ?

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    5. Which characteristic of the sound helps you to identify your friend by...

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    6. Flash ans thunder are produced simultaneously. But thunder is heard a ...

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    7. A person has a hearing range from 20 Hz to 20 kHz. What are the typica...

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

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    9. The frequency of a source of sound is 100 Hz. How many times does it v...

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

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

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

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

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    14. A sound wave travels at a speed of 339 m//s. If its wavelength is 1.5 ...

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

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

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

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    18. How is ultrasound used for cleaning ?

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    19. Explain the working and application of a sonar.

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

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