JEE Main 2026 Physics question
A planet (P₁) is moving around the star of mass 2M in the orbit of radius R. Another planet (P₂) is moving around another star of mass 4M in a orbit of radius 2R. Ratio of time periods of revolution of P₂ and P₁ is .
Answer: (B)
Solution
T² ∝ R³/M: T₂²/T₁² = [(2R)³/(4M)]/[R³/(2M)] = 4, so T₂/T₁ = 2.