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Define crest and trough....

Define crest and trough.

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Assertion : Sound waves travel in the form of compressions and rarefactions in air. Reason : Because crests and troughs cannot be sustained in air, therefore, sound waves cannot travel through air in the form of transverse waves.

MODERN PUBLICATION-WAVES-REVISION EXERCISES
  1. Is it possible to have longitudinal waves on a string? A transverse wa...

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  2. Transverse wave motion is possible in which media : solid, liquid, gas...

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  3. Define crest and trough.

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  4. Longitudinal waves are possible in

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  5. Which property is common in all types of mechanical waves?

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  6. On plucking the wire of a sonometer, which type of waves are produced ...

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  7. What is the effect of pressure on speed of sound in air?

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  8. What is the distance between a compression and its nearest rarefaction...

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  9. What is the effect of temperature on the speed of sound ?

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  10. In which medium the speed of sound is greater : in moist air or in dry...

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  11. What will be the the time period of a vibrating source if the waveleng...

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  12. Can sound waves travel through vacuum ?

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  13. How velocity of sound in a gaseous medium is affected by the density o...

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  14. What is the effect of pitch and loudness on the velocity of sound ?

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  15. Stethoscope used by doctors is based on which phenomenon ?

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  16. What is the shape of the graph between the pressure and speed of sound...

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  17. State the principle of superposition of waves.

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  18. Stationary waves are formed when

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  19. Why is a stationary wave so named?

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  20. What are the positions of maximum and minimum displacements called in ...

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