A speeding motorcyclist sees traffic jam ahead of him. He slows down to 36 km/hour. He finds the traffic has eased and a car moving ahead of him at 18 km/hour is honking at a frequency of 1392 Hz. The speed of sound is 343 m/s, the frequency of the honk as heard by him will be :

Question

Dr. Abubacker · Accepted Answer

[Solution] Observer (10 m/s) moves towards the source, source (5 m/s) moves away: $f = 1392 	imes \frac{343 + 10}{343 + 5} \approx 1412$ Hz. Answer (3).

Q. A speeding motorcyclist sees traffic jam ahead of him. He slows down to 36 km/hour. He finds the traffic has eased and a car moving ahead of him at 18 km/hour is honking at a frequency of 1392 Hz. The speed of sound is 343 m/s, the frequency of the honk as heard by him will be :

Explanation

Reviewed by Dr. Abubacker

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