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A police car moving at 22m//s, chases a ...


A police car moving at `22m//s`, chases a motorcyclist, the police man sounds his horn at `176 Hz`, while both of them move towards a stationary siren of frequency `165 H`z. Calculate the speed of the motorcycle, if it is given that he does not observes any beat

A

`33(m)/(s)`

B

`22(m)/(s)`

C

`11(m)/(s)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
`n_1=n_2implies(v-v_m)/(v-v_C)n'=(v+v_m)/(v)n`
`implies(v-v_m)/(v-22)xx176=(v+v_m)/(v)xx165`
`impliesn_m=22(m)/(s)`
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CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Single Correct
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