Questions
A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is of three times the original frequency. The velocity of sound is v m/sec. The speed of source will be
a
23v
b
v
c
32v
d
3v
detailed solution
Correct option is A
n'=n vv−vS⇒n'n=vv−vS⇒vv−vS=3⇒vs=2v3Talk to our academic expert!
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An observer is moving towards the stationary source of sound, then
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