A girl claps and hears the echo after reflection from a cliff which is 1200 m away from her. If the velocity of sound is 600 m/s ,calculate the time taken for hearing the echo..
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Answer:
Time = 4s
Explanation:
See the sound would first go towards the cliff
Strike the cliff and return with the same velocity!
Distance = 1200m + 1200m = 2400m
Velocity of sound = 600m/s
Time = Distance/velocity
Time = 2400/600 = 4s
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