NEET | JEE | MHT-CET PHYSICS PREPARATION |
PREVIOUS EXAM QUESTION BANK
TOPIC: GRAVITATION
1.
The tidal
waves in the sea are primarily due to
(a) The gravitational effect of the moon on the
earth
(b) The gravitational effect of the sun on the
earth
(c) The gravitational effect of venus on the earth
(d) The atmospheric effect of the earth itself
2.
If there were
a smaller gravitational effect, which of the following forces do you think
would alter in some respect
(a) Viscous forces
(b)Archimedes
uplift
(c) Electrostatic force
(d) None of the above
3.
A satellite of the earth is revolving in a
circular orbit with a uniform speed v.
If the gravitational force suddenly disappears, the satellite will
(a) Continue to move with velocity v
along the original orbit
(b) Move with a velocity v, tangentially to the original orbit
(c) Fall down with increasing velocity
(d) Ultimately come to rest somewhere on the
original orbit
4.
The atmosphere is held to the earth by
(a) Winds
(b)Gravity
(c) Clouds
(d)None of
the above
5.
The weight of
a body at the centre of the earth is
(a) Zero
(b) Infinite
(c) Same as on the surface of the earth
(d) None of the above
6.
If the distance between the two masses is doubled,
the gravitational attraction between them
(a) Is doubled
(b) Becomes four times
(c) Is reduced to half
(d) Is reduced to a quarter
7.
Which of the
following is the evidence to show that there must be a force acting on earth
and directed towards the sun
(a) Deviation of the falling bodies towards the east
(b) Revolution of the earth around the sun
(c) The phenomenon of day and night
(d) The apparent motion of sun around the earth
8. Reason of weightlessness in a satellite is
(a) Zero gravity
(b) Centre of mass
(c) Zero reaction force by satellite surface
(d) None
9.
The force of gravitation is
(a) Repulsive (b) Electrostatic
(c) Conservative (d) Non-conservative
10.
The gravitational force Fg between two objects
does not depend on
(a) Sum of the masses
(b) Product of the masses
(c) Gravitational constant
(d) Distance between the masses
11.
Gravitational
mass is proportional to gravitational
(a) Field
(b) Force
(c) Intensity
(d) All of these
12.
The
gravitational force between two point masses m1 and m2 at separation r is given by F=k m1m2/r2
The
constant k
(a) Depends on system of units only
(b) Depends on medium between masses only
(c) Depends on both (a) and (b)
(d) Is independent of both (a) and (b)
13.
The distance
of the centres of moon and earth is D.
The mass of earth is 81 times the mass of the moon. At what distance from the
centre of the earth, the gravitational force will be zero
(a) D/2
(b) 2D/3
(c) 4D/3
(d) 9D/10
14.
Who among the
the following gave first the experimental value of G
(a) Cavendish
(b) Copernicus
(c) Brook Taylor
(d) None of these
15.
The mass of
the moon is 7.34*10 22 kg and the radius is 1.74*10 6 m. The value of gravitation force will be
(a) 1.45 N/kg
(b) 1.55 N/kg
(c) 1.75 N/kg
(d) 1.62 N/kg
Answer key
1
|
a
|
2
|
b
|
3
|
b
|
4
|
b
|
5
|
a
|
6
|
d
|
7
|
b
|
8
|
c
|
9
|
c
|
10
|
a
|
11
|
d
|
12
|
a
|
13
|
d
|
14
|
a
|
15
|
d
|
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