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Two car moving in opposite directions ap...

Two car moving in opposite directions approach each other with speed of `22m//s` and `16.5m//s` respectively. The driver of the first car blows a horn having a frequency `400 Hz`. The frequency heard by the driver of the second car is [velocity of sound `340m//s`].

A

350 Hz

B

361 Hz

C

411 Hz

D

448 Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`f_(A)=f[(v+v_(o))/(v-v_(s))]`
`=400[(340+16.5)/(340-22)]`
`f_(A)=448 Hz `
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