Two stationary sources each emit waves of wavelength lambda. An observer moves from one source to another with velocity u. Then number of beats Heard by him

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Q. Two stationary sources each emit waves of wavelength

λ

. An observer moves from one source to another with velocity

u

. Then, the number of beats per second heard by the observer is:

[Assume, medium is stationary ; the source and the observer are collinear]

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^{'} v_{0}^{'}

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^{'} v_{0}^{'}

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