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Two cars moving in opposite directions a...

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

Text Solution

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`f_(A) = f [(v+ v_(o))/(v - v_(s))] = 400 [(340 + 16.5)/(340- 22)]`
`= 400 [(356.5)/(318)] = 400 xx 1.1210`
`f_(A) = 448.4` Hz
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