A car P travelling at 20 m/s sounds its horn at a frequency of 400 Hz. Another car Q is travelling behind the…

Question

A car **P** travelling at $$20 \, 	ext{m/s}$$ sounds its horn at a frequency of $$400 \, 	ext{Hz}$$. Another car **Q** is travelling behind the first car in the same direction with a velocity $$40 \, 	ext{m/s}$$. The frequency heard by the passenger of the car **Q** is approximately [Take, velocity of sound $$= 360 \, 	ext{m/s}$$]

Accepted Answer

C. $$421 \, 	ext{Hz}$$

Answer

A. $$471 \, 	ext{Hz}$$

Answer

B. $$514 \, 	ext{Hz}$$

Answer

D. $$485 \, 	ext{Hz}$$

Answer & step-by-step solution

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