Questions
The echo of a gun shot is heard 8 sec after the gun is fired. How far from him is the surface that reflects the sound (velocity of sound in air = 350 m/s)
detailed solution
Correct option is A
Suppose the distance between shooter and reflecting surface is d. Hence time interval for hearing echo is t=2dv⇒8=2d350⇒d=1400 m.Talk to our academic expert!
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