Gravitational Potential Energy and Gravitational Potential NEET Questions

Physics - Gravitation

Gravitational Potential Energy and Gravitational Potential MCQ Questions


13.
If the separation between two masses is doubled, the gravitational potential energy of the system will:
A.
Halved
B.
Doubled
C.
Remains same
D.
Becomes one-fourth
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ANSWER :
A. Halved
14.
A mass m is moved in a gravitational field from point A to B. The work done by the gravitational force is:
A.
Always positive
B.
Always negative
C.
Always zero
D.
Depends on mass
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ANSWER :
B. Always negative
15.
The escape velocity from a planet of mass M and radius R is given by:
A.
√(2GM/R)
B.
√(GM/R)
C.
2GM/R
D.
GM/2R
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ANSWER :
A. √(2GM/R)
16.
Gravitational potential is always:
A.
Positive
B.
Zero
C.
Negative
D.
Depends on reference
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ANSWER :
C. Negative
17.
The gravitational potential at the center of a solid sphere is:
A.
-3GM/2R
B.
-GM/R
C.
GM/R
D.
-2GM/3R
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ANSWER :
D. -2GM/3R
18.
Two bodies of masses m and 9m are placed at a distance R. The gravitational potential on the line joining the bodies where the gravitational field equals zero will be:

NEET - 2021

A.
-20Gm/R
B.
-8Gm/R
C.
-12Gm/R
D.
-16Gm/R
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ANSWER :
A. -20Gm/R