Gravitation NDA Questions

NDA Physics

Gravitation MCQ Questions


7.
If the mass of Earth is doubled with no change in its radius, how does the gravitational force between Earth and a person on its surface change?
A.
It doubles
B.
It remains the same
C.
It quadruples
D.
It halves
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ANSWER :
A. It doubles
8.
: Which of the following statements is true regarding gravitational force?
A.
It can be either attractive or repulsive
B.
It varies depending on the masses involved
C.
It is always repulsive
D.
It is always attractive
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ANSWER :
D. It is always attractive
9.
What is the SI unit of gravitational constant?
A.
N/m
B.
m/s
C.
N m/kgĀ²
D.
kg
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ANSWER :
C. N m/kgĀ²
10.
What is the formula to calculate the weight of an object?
A.
Weight = Mass * Acceleration due to gravity
B.
Weight= Mass * Gravitational constant
C.
Weight= Mass* Orbital Velocity
D.
Weight= Mass* Orbital Radius
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ANSWER :
A. Weight = Mass * Acceleration due to gravity
11.
If the distance between two objects is doubled, how does the gravitational force between them change?
A.
It becomes half
B.
It doubles
C.
It becomes one-fourth
D.
It remains the same
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ANSWER :
C. It becomes one-fourth
12.
What does the law of gravitation state?
A.
The force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers
B.
The force of gravity between two objects is inversely proportional to the product of their masses and directly proportional to the square of the distance between their centers
C.
The force of gravity between two objects is directly proportional to the square of their masses and inversely proportional to the distance between their centers
D.
The force of gravity between two objects is directly proportional to the distance between their centers
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ANSWER :
A. The force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers