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Questions  

 A satellite launched into a circular orbit of radius ‘R’ around the earth while a second satellite is launched into an orbit of radius 1.06R . The percentage change in the time periods of the two satellite is

a
9
b
0.6
c
0.5
d
5

detailed solution

Correct option is A

T2T1=(R2R1)3/2=(1+0.061)3/2      ΔTT×100=32ΔRR×100 T2T1−1=(1+0.09)−1                     =32×1.06R−RR×100100×ΔTT=9                                      =32×0.06×100                                                                     =9%

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