A source of sound of frequency 300 Hz is moving rapidly toward a fixed wall with a velocity of 30 m/s. If the speed of sound is

Question

A source of sound of frequency 300 Hz is moving rapidly toward a fixed wall with a velocity of 30 m/s. If the speed of sound is 330 m/s, then the frequency of reflected wave observed by stationary observer will be n x 10 Hz. Find n.

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