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A whistle giving out 450 H(Z) approaches...

A whistle giving out `450 H_(Z)` approaches a stationary observer at a speed of `33 m//s`. The frequency heard the observer (in `H_(Z)`) is (speed of sound `= 330 m//s`)

A

`409`

B

`429`

C

`517`

D

`500`

Text Solution

Verified by Experts

The correct Answer is:
D
The apparent frequency heard by the observer is given by
`n' =(v)/(v-v_S)n=(330)/(330-33)xx450=(330)/(297)xx450=500Hz`
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