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A bomb explodes on the Moon, how long will the sound of explosion take to reach the Earth?

A. 10 s 

B. 1000 s 

C. 1 day 

D. none of these

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As the moon has no atmosphere, there is an absence of air. Sound cannot travel without medium because it is a mechanical wave. So, it will never be able to reach earth due to the vacuum between earth and moon in space.

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