Gravitation NDA Questions

NDA Physics

Gravitation MCQ Questions


1.
According to Newton's Law of Universal Gravitation, the force between two masses is proportional to:
A.
The sum of the masses and inversely proportional to the square of the distance between them
B.
The product of the masses and inversely proportional to the square of the distance between them
C.
The product of the masses and directly proportional to the square of the distance between them
D.
The product of the masses and directly proportional to the distance between them
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ANSWER :
B. The product of the masses and inversely proportional to the square of the distance between them
2.
If the distance between two bodies is halved, how does the gravitational force between them change?
A.
It becomes four times larger
B.
It becomes twice as large
C.
It becomes half as large
D.
It becomes a quarter of the original force
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ANSWER :
A. It becomes four times larger
3.
The gravitational force between two masses depends on:
A.
Their masses, distance, and speed
B.
Their masses only
C.
Their masses and the distance between them
D.
The distance between them only
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ANSWER :
C. Their masses and the distance between them
4.
A satellite is in a stable orbit around Earth What provides the centripetal force keeping it in orbit?
A.
Electromagnetic forces
B.
Inertia of the satellite
C.
Atmospheric pressure
D.
Gravitational attraction between the satellite and Earth
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ANSWER :
D. Gravitational attraction between the satellite and Earth
5.
What happens to the weight of an object as it moves further from the surface of Earth?
A.
It decreases
B.
It increases
C.
It remains constant
D.
It becomes zero at a certain distance
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ANSWER :
A. It decreases
6.
The escape velocity from Earth's surface is approximately:
A.
125 km/s
B.
112 km/s
C.
98 km/s
D.
108 km/s
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ANSWER :
B. 112 km/s