wave_mechanics dopplers_effect Question 28
Question: A source of sound of frequency n is moving towards a stationary observer with a speed S. If the speed of sound in air is V and the frequency heard by the observer is $ n _{1} $ , the value of $ n _{1}/n $ is
[MP PMT 1997]
Options:
A) $ (V+S)/V $
B) $ V/(V+S) $
C) $ (V-S)/V $
D) $ V/(V-S) $
Show Answer
Answer:
Correct Answer: D
Solution:
By using $ {n}’=n\frac{v}{v-v _{S}} $
Therefore $ \frac{n _{1}}{n}=( \frac{V}{V-S} ) $
BETA
