alleryTwo satellites orbit a planet at radii r and 4r in circular orbits. The ratio of their periods T1 : T2 is:
A1 : 2
B1 : 8
C1 : 4
D1 : 16
Answer & Solution
Correct answer: B. 1 : 8
We have T² ∝ r³ ⇒ T₂/T₁ = (4)^{3/2}.
So T² ∝ r³ ⇒ T₂/T₁ = 8.
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