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An engine blowing a whistle of frequency...

An engine blowing a whistle of frequency 133 Hz moves with a velocity of `60(m)/(s)` towards a wall from which an echo is heard. Calculate the frequency of the echo heard by the driver. (velocity of sound in air in `340(m)/(s)`.)

A

190 Hz

B

161 Hz

C

133 Hz

D

113 Hz

Text Solution

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The correct Answer is:
C
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