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 when he is at the shortest distance between them. Then (if the sound velocity in air is 300 m/s)

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

n1=10 n

n1=0

n1=0.1 n

n1=−0.1 n

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

No shift in frequency as there is zero relative velocity at the given instant.

Watch 3-min video & get full concept clarity