Waves Part 2
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Question : 46 of 52
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The frequency of echo will be _______ Hz if the train blowing a whistle of frequency 320 Hz is moving with a velocity of 36 km ∕ h towards a hill from which an echo is heard by the train driver. Velocity of sound in air is 330 m ∕ s .
[28-Jul-2022-Shift-1]
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