Gravitation UPSC Questions

Physics

Gravitation MCQ Questions


13.

Which of the following about Gravitational force is correct
(i) The force of attraction between any two objects is proportional to their masses
(ii) Inversely proportional to square of distance between them
(iii) Gravitational law is universal law

A.

(i) only

B.

(ii) only

C.

(iii) only

D.

All the above

😑 View Answer Rough Work Error
ANSWER :

D. All the above

14.
The Upthrust and weight act in
A.
Upward
B.
Downward
C.
Same direction
D.
Opposite direction
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ANSWER :
D. Opposite direction
15.
Mass of an object is 10 kg. What is its weight on the earth?
A.
9.8 Newton
B.
98 Newton
C.
0.98 Newton
D.
980 Newton
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ANSWER :
B. 98 Newton
16.
What was the principle Archimedes discovered?
A.
Principle of volume
B.
Principle of denstiy
C.
Principle of buoyancy
D.
Principle of gravity
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ANSWER :
C. Principle of buoyancy
17.

Match the following

List I List II
a) Kepler’s third law i.) Laws of periods
b) kepler's second law ii.) Laws of area
c) Kepler's first law iii.) Laws of orbits
A.

a-1,b-2,c-3

B.

a-3,b-2,c-1

C.

a-2,b-3,c-1

D.

a-3,b-1,c-2

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ANSWER :

A. a-1,b-2,c-3

18.
A body is projected vertically from the surface of the earth of radius R with velocity equal to half of the escape velocity. The maximum height reached by the body is
A.
R
B.
R/2
C.
R/3
D.
R/4
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ANSWER :
C. R/3