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A particle of mass 10g is kept on the su...

A particle of mass 10g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to done against the gravitational force between them to take the particle is away from the sphere.

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The correct Answer is:
A
Work done against gravitatioN/Al force to take away the particle from sphere
`=(Gxx10xx0.1)/(1xx0.1)`
`(6.67xx10^-11xx1)/(1xx0.1)`
`=6.57xx10^-10J`
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