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MHT CET Physics question

PhysicsWavesMHT CET

The velocity of sound is 340 m/s. A source of sound having frequency of 90 Hz is moving towards a stationary observer with a speed of one-tenth that of sound. The apparent frequency of sound as heard by the observer is [MHT-CET 2017]

Answer: (C)

Solution

Hz; 50, 45 and 80 Hz are lower than 90 Hz, which is

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Question ID VK-068729