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

A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is. …………………

A

2068 Hz

B

2180 Hz

C

2000 Hz

D

1980 Hz

Text Solution

Verified by Experts

The correct Answer is:
A
`f. = ((v)/(v - v_(s))) xx f = (1220)/(1220 - 40) xx 2000 = 2068` Hz
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