-
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 + n1. Then (if the sound velocity in air is 300 m/s)
-
- n1 = 10n
- n1 = 0
- n1 = 0.1n
- n1 = – 0.1n
Correct Option: B
As the source is not moving towards or away from the observer in a straight line, so the Doppler’s effect will not be observed by the observer.
