Physics-Gravitational Potential Energy
NEET Physics Gravitational Potential Energy MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Refer to the diagram above, which illustrates the gravitational potential energy variation with distance from the center of the Earth. If the gravitational potential energy at a point is represented by W(r) = -GM_Em/r, what is the potential energy difference between two points, r1 and r2 (r2 > r1), in terms of the given variables?
A
GM_Em*(1/r1 - 1/r2)
B
GM_Em*(r2 - r1)
C
GM_Em*(1/r2 - 1/r1)
D
GM_Em*(r1 - r2)
Correct Answer
Option A
Detailed Explanation
The potential energy difference between two points is derived as W(r2) - W(r1) = -GM_Em*(1/r2 - 1/r1), which simplifies to GM_Em*(1/r1 - 1/r2).
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