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A source of sound which emitting a sound...

A source of sound which emitting a sound of frequency 600 Hz is moving towards a wall with a velocity 30 m/s. Three observes A, B, C moving with velocity 20 m/s, A away from the wall and B towards the wall and Inside the source, Velocity of sound in air is 330 m/s.

Find the frequency of direct sound observed by observer A

A

`600 310/360` Hz

B

`600 210/360` Hz

C

`600 110/360` Hz

D

None of these

Text Solution

Verified by Experts

Frequency of direct sound observed by observer A is
`f=f_0((vpmv_(0m))/(vpmv_(sm)))`
`f=600((330-20)/(330+30))=600 310/360` Hz
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