NEET2018Physics-Gravitation

NEET 2018 Physics Kepler's Laws MCQ Question

Type: MCQ-conceptual-Medium-Class 11

The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are Kₐ, Kᵦ and Kc, respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun S as shown in the figure. Then

Question diagram
A

Kₐ < Kᵦ < Kc

B

Kₐ > Kᵦ > Kc

C

Kᵦ < Kₐ < Kc

D

Kᵦ > Kₐ > Kc

Correct Answer

Option B

Detailed Explanation

In an elliptical orbit, the speed (and hence kinetic energy) is maximum at the closest point to the Sun (perihelion) and minimum at the farthest point (aphelion).

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