MHT CET Physics question

PhysicsWavesMHT CET

A source of sound emitting a 1200 Hz note travels along a straight line at a speed of . A detector is placed at a distance of 200 m from the line of motion of the source. Find the frequency of sound received by the detector at the instant when the source gets closest to it. (Take, speed of sound = )

Answer: (A)

Solution

The sound received at the instant of closest approach was emitted earlier when the source was at distance with , giving (), so the velocity

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Question ID VK-068658