Gravitation UPSC Questions

Physics

Gravitation MCQ Questions


13.
The Buoyant force is also known as
A.
Low-thrust
B.
Thrust
C.
Upthrust
D.
None of the above
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ANSWER :
C. Upthrust
14.
Which of the following statements is true of the value of acceleration due to gravity?
A.
The value is least on poles
B.
The value is the same on the equator and poles
C.
The value is almost negligible on the equator
D.
The value increases from pole to equator
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ANSWER :
C. The value is almost negligible on the equator
15.
Recently, scientists observed the merger of giant ‘blackholes’ billions of light-years away from the Earth. What is the signifi cance of this observation?
UPSC - 2019
A.
‘Higgs boson particles’ were detected.
B.
‘Gravitational waves’ were detected.
C.
Possibility of inter-galactic space travel through ‘wormhole’ was confi rmed.
D.
It enabled the scientists to understand ‘singularity’.
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ANSWER :
B. ‘Gravitational waves’ were detected.
16.
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
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ANSWER :
D. All the above
17.
The Upthrust and weight act in
A.
Upward
B.
Downward
C.
Same direction
D.
Opposite direction
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ANSWER :
D. Opposite direction
18.
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