sound travel with a velocity of 340ms-1.how much time does it take to return to the source after reflection from a reflector placed 1.7 kms away?
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v=2d/t
t=2d/v
t=2×1700/340
t=3400/340
t=10 sec.
t=2d/v
t=2×1700/340
t=3400/340
t=10 sec.
preetitiwari:
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