Gravitational Potential Energy and Gravitational Potential NEET Questions

Physics - Gravitation
Gravitational Potential Energy and Gravitational Potential

Gravitational Potential Energy and Gravitational Potential MCQ Questions


13.
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)
14.
Gravitational potential is always ........................... at any finite distance from a mass.
A.
Positive
B.
Zero
C.
Negative
D.
Depends on reference
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ANSWER :
C. Negative
15.
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 :
A. -3GM/2R
16.
The work done in moving a body of mass m from infinity to a point r in a gravitational field of mass M is:
A.
GMm/r
B.
-GMm/r
C.
GMm/2r
D.
-GMm/2r
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ANSWER :
B. -GMm/r
17.
If the mass of the Earth is doubled while keeping its radius the same, the escape velocity will:
A.
Double
B.
√2 times
C.
Remain the same
D.
Quadruple
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ANSWER :
B. √2 times
18.
If a satellite moves from an orbit of radius 3R to 5R, the change in potential energy is:
A.
2GMm/15R
B.
2GMm/5R
C.
3GMm/5R
D.
GMm/10R
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ANSWER :
A. 2GMm/15R
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