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प्रश्न
Mention two cases in which there is no Doppler effect in sound?
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उत्तर
- When source (S) and listener (L) both are at rest.
- When S and L move in such a way that distance between them remains constant.
- When source S and L are moving in mutually perpendicular directions.
- If the source is situated at the centre of the circle along which the listener is moving.
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संबंधित प्रश्न
Name the characteristic which differentiates two sounds of the same pitch and same loudness.
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(ii) at right angles to the direction of wave.
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The separation between two consecutive crests in a transverse wave is 100 m. If wave velocity is 20 m s-1, find the frequency of wave.
Two tuning forks A and B of frequencies 256 Hz and 192 Hz respectively are vibrated in air. If the wavelength of A is 1.25 m, calculate the wavelength produced by B.
In longitudinal waves, the particle vibrates in a ______ direction of propagation.
