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A source of sound is travelling with a v...

A source of sound is travelling with a velocity of `30(m)/(s)` towards a stationary observer. If actual frequency of source is 1000 Hz and the wind is blowing with velocity `20(m)/(s)` in a direction at `60^@C` with the direction of motion of source, then the apparent frequency heard by observer is (speed of sound is `340(m)/(s)`)

A

1011 Hz

B

1000 Hz

C

1094 Hz

D

1086 Hz

Text Solution

Verified by Experts

The correct Answer is:
C
`f=((v+v_m)/(v+v_m-v_(source)))1000`
`=((340+20cos60^@)/(340+20cos60^@-30))1000`
`=1094Hz`
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