wave_mechanics dopplers_effect Question 58
Question: A source and an observer are moving towards each other with a speed equal to $ \frac{v}{2} $ where $ v $ is the speed of sound. The source is emitting sound of frequency n. The frequency heard by the observer will be
[MP PET 2003]
Options:
A) Zero
B) $ n $
C) $ \frac{n}{3} $
D) $ 3n $
Show Answer
Answer:
Correct Answer: D
Solution:
$ n’=n( \frac{v+v _{0}}{v-v _{s}} )=n( \frac{v+v/2}{v-v/2} )=3n $
BETA
