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Physics Wave and Sound JEE Main 2021 MCQ (Single Correct)

The frequency of a car horn encountered a change from 400Hz to 500Hz. When the car approaches a vertical wall. If the speed of sound is 330m/s. Then the speed of car is ___ km/h.

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(132)

Wall as an observer Frequency received by wall

Again wall as a source Frequency received by observer on car

C = 9 V

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