A speeding motorcyclist sees traffic jam ahead him. He slows down to 36 km hour⁻¹. He finds that traffic has eased and a car moving ahead of him at 18 km hour⁻¹ is honking at a frequency of 1392 Hz. If the speed of sound is 343 m s⁻¹, the frequency of the honk as heard by him will be

Options

(a) 1332 Hz
(b) 1372 Hz
(c) 1412 Hz
(d) 1454 Hz

Correct Answer:

1412 Hz

Explanation:

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