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Question

The mass of the moon is 1/81 of earth's mass and its radius 1/4 that of the earth. If the escape velocity from the earth's surface is 11.2 km/sec. its value from the surface of the moon will be

A
0.14kms1
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B
0.5kms1
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C
2.5kms1
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D
5.0kms1
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