Questions
A man standing on a cliff claps his hand hears its echo after 1 sec. If sound is reflected from another mountain and velocity of sound in air is 340 m/sec. Then the distance between the man and reflection point is
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a
680 m
b
340 m
c
85 m
d
170 m
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Correct option is D
If d is the distance between man and reflecting surface of sound then for hearing echo2d=v×t⇒d=340×12=170 mSimilar Questions
The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K is
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