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A man fires a gun 150 m from a cliff. A ...

A man fires a gun 150 m from a cliff. A second man who is standing 300 m further away from the cliff hears the gunshot 1 second after he sees the flash. The second man will hear the echo from the cliff

A

1 second after seeing the flash

B

2 seconds after hearing the gunshot

C

2 seconds after seeing the flash

D

4 seconds after hearing the gunshot.

Text Solution

Verified by Experts

The correct Answer is:
C
Echo will be heard when the sound of the gun gets reflected from the cliff. Thus the total distance travelled by the sound of gun, `S=x_(1)+x_(2)+x_(3)`
`S=150+150+300=600m`
`v=300" m s"^(-1)`
`:." "t=(S)/(V)=(600)/(300)=2s`
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