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Assuming that the moon is a sphere of th...

Assuming that the moon is a sphere of the same mean density as that of the earth and one quarter of its radius, the length of a seconds pendulum on the moon (its length on the earth's surface is 99.2 cm) is

A

24.8 cm

B

49.6 cm

C

99.2 cm

D

`(99.2)/sqrt2 cm`

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The correct Answer is:
A
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