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a car is moving with speed 20m/s in east...

a car is moving with speed 20m/s in east direction and a scooterist is moving with same speed in same direction. the car to blow a horn frequency 150 Hz. the frequency of horn heard by the scooterist is ( take speed of sound 340 m/s)

A

150 Hz

B

140 Hz

C

180 Hz

D

174 Hz

Text Solution

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The correct Answer is:
D
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