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MHT CET Physics question

PhysicsWavesMHT CET

An engine blowing a whistle of frequency 133 Hz moves with a velocity of towards a hill from which an echo is heard. The frequency of the echo heard by the driver (Velocity of sound in air = )

Answer: (A)

Solution

The hill receives Hz and re-emits it; the driver, moving towards the hill, hears

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Question ID VK-070119