Home Physics Electron, Photon, Photoelectric Effect and X-rays NCERT Two sources of sound placed close to each ot…
Physics Electron, Photon, Photoelectric Effect and X-rays NCERT MCQ (Single Correct)

Two sources of sound placed close to each other are emitting progressive waves given by 600 and . An observer located near these two sources of sound will hear

A
8 beats per second with intensity ratio 81: 1 between waxing and waning
B
4 beats per second with intensity ratio 81: 1 between waxing and waning
C
4 beats per second with intensity ratio 25: 16 between waxing and waning
D
8 beats per second with intensity ratio 25: 16 between waxing and waning

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The correct answer is:
B

While, : :

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