wave_mechanics dopplers_effect Question 52
Question: What should be the velocity of a sound source moving towards a stationary observer so that apparent frequency is double the actual frequency (Velocity of sound is v)
[MP PMT 2002]
Options:
A) v
B) 2v
C) $ \frac{v}{2} $
D) $ \frac{v}{4} $
Show Answer
Answer:
Correct Answer: C
Solution:
By using $ n’=( \frac{v}{v-v _{S}} )\Rightarrow 2n=n( \frac{v}{v-v _{S}} )\Rightarrow v _{S}=\frac{v}{2} $
BETA
