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Q.

A satellite of mass m is orbiting round the earth at a distance of 2R’ from the centre of the earth. The amount of energy that must be given to the satellite in order to make its radius 6R must be :-

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a

less than GMem3R

b

equal to GMem6R

c

greater than GMem4R

d

less than GMem4R

answer is B.

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Detailed Solution

ΔE=−GMem12R+GMem4R=GMem6R
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