A car P travelling at 20 m s -1 sounds its horn at a frequency of 400 Hz. Another car Q is travelling behind the first car in the same direction with a velocity 40 m s -1 . The frequency heard by the passenger of the car Q is approximately [Take, velocity of sound = 360 m s -1 ]
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Verified by ExpertsThe correct answer is:
B
Let velocity of sound in air be v m s" 1 . Using Doppler formula,
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