Waves - Result Question 77
79. A source and an observer move away from each other, with a velocity of with respect to ground. If the observer finds the frequency of sound coming from the source as , then original frequency of source is (velocity of sound in air )
(a)
(b)
(c)
(d)
[2001]
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Answer:
Correct Answer: 79. (b)
Solution:
- (b) According to Doppler’s effect