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MHT CET 2022 Physics question

PhysicsWavesMHT CET 2022

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

Answer: (B)

Solution

For a source moving towards a stationary observer, . Here , so Hz, option (B). The frequency increases because the waves are

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Question ID VK-095863