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A whistle giving out a sound of frequenc...

A whistle giving out a sound of frequency` 450Hz` , approaches a stationary observer at a speed of `33ms_(1)`.`
` The frequency heard by the observer is (speed of sound `=330m s_(1)`____.

Text Solution

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The correct Answer is:
500Hz
Apparent frequency `n.=((v)/(v-v_(s)))n`
`=((330)/(330-33))xx450=1.11xx450`
n.=500Hz
Data: `v=330ms^(-1)`
`v_(s)=33ms^(-1)`
n=450Hz
n.=?
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