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What is the value of acceleration due to...

What is the value of acceleration due to gravity on the surface of the moon ? Given that the mass of the moon is `1//80` times that of the earth and diameter of the moon is `1//4` times that of earth `(g=9.8m//s^2)`.

A

`2.5xx10^3km//s`

B

`2.5xx10^2km//s`

C

`2.5xx10km//s`

D

`2:5km//s`

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The correct Answer is:
D
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