Escape Velocity NEET Questions

Physics - Gravitation

Escape Velocity MCQ Questions


13.
Which celestial body has the lowest escape velocity?
A.
Earth
B.
Mars
C.
Pluto
D.
The Moon
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ANSWER :
D. The Moon
14.
Escape velocity is derived from which fundamental law of physics?
A.
Newton's Second Law
B.
Newton's Third Law
C.
Law of Conservation of Energy
D.
Law of Conservation of Momentum
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ANSWER :
C. Law of Conservation of Energy
15.
If an object is projected with escape velocity, its total energy at infinity is:
A.
Zero
B.
Positive
C.
Negative
D.
Cannot be determined
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ANSWER :
B. Positive
16.
What will be the escape velocity on a planet having the same density as Earth but twice the radius?
A.
Same as Earth
B.
√2 times Earth's escape velocity
C.
Twice Earth's escape velocity
D.
Half of Earth's escape velocity
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ANSWER :
B. √2 times Earth's escape velocity
17.
The escape velocity from the Earth's surface is v. The escape velocity from the surface of another planet having a radius four times that of Earth and the same mass density is:

NEET - 2015

A.
3v
B.
4v
C.
v
D.
2v
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ANSWER :
B. 4v
18.
The escape velocity from a black hole is:
A.
Infinity
B.
Zero
C.
Same as light speed
D.
Depends on temperature
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ANSWER :
A. Infinity