A driver in a stationary car blows a horn which produces monochromatic sound waves of frequency 1000 Hz normally towards a reflecting wall. The wall approaches the car with a speed of 3.3 ms − 1 . (Gi

Question

A driver in a stationary car blows a horn which produces monochromatic sound waves of frequency 1000 Hz normally towards a reflecting wall. The wall approaches the car with a speed of 3.3 ms − 1 . (Given Velocity of sound = 330 m / s )

TestHub · Accepted Answer

f ′ = 1000 ( 340 − 3.3 340 + 3.3 ​ ) = 1020 Hz f f ′ − f ​ × 100 = f Δ f ​ × 100 = 2%

Physics - Sound Wave Question with Solution | TestHub

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JEE Advanced 2026