Gravitation CDS Questions

CDS Physics

Gravitation MCQ Questions


13.
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
14.
A spring balance is used for measuring
A.
Velocity
B.
Pressure
C.
Speed
D.
Weight
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ANSWER :
D. Weight
15.
The farther away a planet is from the sun, the ______ it takes it to orbit the sun once
A.
Longer
B.
Shorter
C.
Same
D.
None of the above
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ANSWER :
A. Longer
16.
Kepler’s first law states that the orbits of the planets are oval in shape or
A.
Perfect circles
B.
Ellipes
C.
Squares
D.
Triangle
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ANSWER :
B. Ellipes
17.
The SI unit of gravitational potential energy is
A.
Newton
B.
Pascal
C.
Joule
D.
Watt
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ANSWER :
C. Joule
18.
An object weighs 10 N when measured on the surface of the earth. What would be its weight when measured on the surface of the moon?
A.
1.67 Newton
B.
16.7 Newton
C.
0.167 Newton
D.
167 Newton
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ANSWER :
A. 1.67 Newton