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Q.

A satellite A of mass m is at a distance of r from the centre of the earth. Another satellite B of mass 2m is at a distance of 2r from the earth's centre. Their time periods are in the ratio of

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a

1 : 32

b

1:22

c

1 : 2

d

1 : 16

answer is D.

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Detailed Solution

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Mass of the satellite does not effects on time period 

TATB=r1r23/2=r2r3/2=181/2=122

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