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Class 11
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Physics
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Gravitation
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NEET Questions
Gravitation
Physics
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JEE Mains
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A body weighs
7
2
N
on the surface of the earth. What is the gravitational force on it due to the earth at a height equal to half the radius of the earth?
A
16 N.
B
28 N
C
32 N
D
72 N
Medium
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A body of mass '
m
' taken from the earth's surface to the height equal to twice the radius (
R
) of the earth. The change in potential energy of body will be
A
2
m
g
R
B
3
1
m
g
R
C
3
m
g
R
D
3
2
m
g
R
Medium
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A body weighs 200 N on the surface of the earth. How much it weigh half way down to the centre of the earth ?
A
1
5
0
N
B
2
0
0
N
C
2
5
0
N
D
1
0
0
N
Medium
NEET
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The ratio of escape velocity at earth
(
v
e
)
to the escape velocity at a planet
(
v
p
)
whose radius and mean density are twice as that of earth is:
A
1
:
2
B
1
:
2
2
C
1
:
4
D
1
:
2
Medium
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The acceleration due to gravity at a height 1 km above the earth is the same as at a depth d below the surface of earth. Then:
A
d
=
2
k
m
B
d
=
2
1
k
m
C
d
=
1
k
m
D
d
=
2
3
k
m
Medium
NEET
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>
Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by which of the following options ?
A
B
C
D
Medium
NEET
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>