wave_mechanics dopplers_effect Question 29
Question: A vehicle with a horn of frequency n is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency$ n+n _{1} $ . Then (if the sound velocity in air is 300 m/s)
[CBSE PMT 1998; AIIMS 2000]
Options:
A) $ n _{1}=10n $
B) $ n _{1}=0 $
C) $ n _{1}=0.1n $
D) $ n _{1}=-0.1n $
Show Answer
Answer:
Correct Answer: B
Solution:
In this case Doppler’s effect is not applicable.
BETA
