Match List-I with List-II: List-IList-II(A)Kinetic energy of planet(I)-GMm/a(B)Gravitation Potential energy of sun-planet system(II)GMm/2a(C)Total mechanical energy of planet(III)(D)Escape energy at the surface of planet for unit mass object(IV)-GMm/2a

Match List-I with List-II: List-IList-II(A)Kinetic energy o…

Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 12 PCB Single Correct MCQ

Published on: August 14, 2026

Match List-I with List-II:

	List-I		List-II
(A)	Kinetic energy of planet	(I)	-GMm/a
(B)	Gravitation Potential energy of sun-planet system	(II)	GMm/2a
(C)	Total mechanical energy of planet	(III)
(D)	Escape energy at the surface of planet for unit mass object	(IV)	-GMm/2a

-(I), -(II), -(III), -(I),

-(IV), -(I), -(IV), -(II),

-(II), -(IV), -(I), -(III),

-(III)
-(III)
-(II)
-(IV)

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The correct answer is:

For a planet of mass orbiting a star of mass at orbital radius a:

Its orbital speed gives kinetic energy

which matches List I - (II).

The gravitational potential energy (for circular orbit ) is

i.e. List I - (I).

Total mechanical energy is kinetic plus potential:

corresponding to List I - (IV).

The escape energy per unit mass from a body of mass and radius is

i.e. List I - (III).

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