NEET 2017 Physics question
Two 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 frequency 400 Hz. The frequency heard by the driver of the second car is [velocity of sound 340 m/s]
Answer: (4)
Solution
Doppler effect with source and observer approaching each other: . (first car, source), (second car, observer), $v = 340\
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