NEET | 2017Sound WavesEasy

Question

20. Tow cars moving in opposite directions approach each other with speed of 22 m/s and 16.5 m/s respectively. The driver of the first car blows a horn having a a frequency 400 Hz. The frequency heard by the driver of the second car is [velocity of sound 340 m/s] :-

Options

A.

361 Hz

B.

411 Hz

C.

448 Hz

D.

350 Hz

Solution


As we know for given condition
fapp = f0 v+vobserverv-vsource=400340+16.5340-22
fapp = 448 Hz

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