waves

Related Questions

• Beats are produced by two waves given by ${{y}_{1}}=a\sin 2000\,\pi t$ and ${{y}_{2}}=a\sin 2008\,\pi t$. The number of beats heard per second is

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• Maximum number of beats frequency heard by a human being is

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• A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is

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• The apparent frequency of a note, when a listener moves towards a stationary source, with velocity of 40 m/s is 200 Hz. When he moves away from the same source with the same speed, the apparent frequency of the same note is 160 Hz. The velocity of sound in air is (in m/s)

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• Which of the following statements is wrong

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