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A man standing on a platform hears the s...

A man standing on a platform hears the sound of frequency 604 Hz coming from a frequency 550 Hz from a train whistle moving towards the platform. If the velocity of sound is 330 m/s, then what is the speed of train?

A

`30(m)/(s)`

B

`35(m)/(s)`

C

`40(m)/(s)`

D

`45(m)/(s)`

Text Solution

Verified by Experts

The correct Answer is:
A
`n'=n((v-v_0)/(v-v_S))`
`implies605=550((330-0)/(330-v_S))`
`v_S=30(m)/(s)`
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