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Q.

An observer is moving with speed $v_{0}$ towards a stationary source emitting a sound wave of wavelength $λ$ The change in wavelength detected by the observer is (v = speed of sound)

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a

$\frac{v}{v_{0}} λ$

b

zero

c

$\frac{v_{0}}{v} λ$

d

$\frac{v_{0}^{2}}{v} λ$

answer is D.

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Detailed Solution

motion of the observer does not change the wavelength

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