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An ambulance is traveling down a highway...

An ambulance is traveling down a highway at `34.5 ms^(-1)`. The ambulance having siren emits sound of frequency 380 Hz. If a passenger in a car travelling with the speed of `26.4 ms^(-1)` in the opposite direction as the car approaches the ambulance and after the two vehicles passed each other, then find the frequency heared by that passenger.
Take speed of sound in air is `343 ms^(-1)`

A

140

B

136

C

142

D

144

Text Solution

Verified by Experts

The correct Answer is:
B
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