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प्रश्न
Fill in the blank.
The number of times a body vibrates in one second is called its ______.
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उत्तर
The number of times a body vibrates in one second is called its frequency.
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संबंधित प्रश्न
Fill in the blank.
The pitch of a sound depends on its ________.
How does a bat make use of ultrasonics waves to find its way?
State the general name of the waves in which the particles of the medium vibrate :
(i) in the same direction as wave.
(ii) at right angles to the direction of wave.
Distinguish between compression and rarefaction.
Define the term wave velocity. Write its S.I. unit.
Define sound ranging.
What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
What is a longitudinal wave?
Assertion: The sound of thunder is heard a little later than the flash of light.
Reason: The speed of sound is much less than the speed of light.
