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
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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