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Questions  

Two satellites A and B of masses m1 and m2m1=2m2 are moving in circular orbits of radii r1 and r2r1=4r2, respectively, around the earth. If their periods are TA and TB, then the ratio TA/TB is

a
4
b
16
c
2
d
8

detailed solution

Correct option is D

m1=2m2⇒m1m2=2r1=4r2⇒r1r2=4TA2∝r12 and TB2∝r23⇒TATB=8

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In the following four periods     
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(ii) Period of oscillation of mass inside the tunnel bored along the diameter of the earth  (Tma)
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