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A motor car blowing a horn of frequency ...

A motor car blowing a horn of frequency `124vib//sec` moves with a velocity `72km//hr` towards a tall wall. The frequency of the reflectedf sound heard by the driver will be (velocity of sound in air is `330 m//s`)

A

109 vib / sec

B

132 vib / sec

C

140 vib / sec

D

248 vib / sec

Text Solution

Verified by Experts

The correct Answer is:
C
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