The wavelength is 120 cm when the source...

The wavelength is 120 cm when the source is stationary. If the source is moving with relative velocity of 60 m / sec towards the observer, then the wavelength of the sound wave reaching to the observer will be (velocity of sound = 330 m / s )

A

98 cm

B

140 cm

C

120 cm

D

144 cm

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The correct Answer is:

A

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