Gravitation Test

Result

Gravitation Test - 30

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

A particle of mass m is placed at the centre of a uniform spherical shell of mass 3m and radius R. The gravitational potential on the surface of the shell is

A

B

C

D

Solution
Question 2
4 / -1

The period of a satellite in a circular orbit around a planet is independent of

A
the mass of the planet

B
the radius of the planet

C
the mass of the satellite

D
all the three parameters (a), (b) and (c).
Question 3
4 / -1

Two satellites of masses m₁ and m₂ are revolving around the earth in circular orbit of radii r₁ and r₂. The ratio of their orbital velocities v₁ /v₂ is

A

B

C

D

Solution
Question 4
4 / -1

The ratio of the K.E. required to be given to the satellite to escape earth’s gravitational field to the K.E. required to be given so that the satellite moves in a circular orbit just above earth’s atmosphere is

A
one

B
half

C
two

D
infinity

Solution
Question 5
4 / -1

A
g

B
g – a

C
g + a

D

Solution
Question 6
4 / -1

An artifical satellite is orbiting at a height of 1800 km from earth’s surface. The earth’s radius is 6300 km and g = 10 m/s² on its surface. What is the radial acceleration

A
6m/s²

B
7 m/s²

C
8 m/s²

D
9 m/s²

Solution
Question 7
4 / -1

The Radii of the circular orbits of two satellites around the earth are in the ratio 1 : 4 then the ratio of their respective periods of revolution is

A
1 : 4

B
4 : 1

C
1 : 8

D
8 : 1

Solution
Question 8
4 / -1

An earth satellite of mass m revolves in a circular orbit at a height ‘h’ from the surface of earth. If R is radius and g is the acceleration due to gravity. The velocity of satellite in orbit is

A

B

C

D

Solution
Question 9
4 / -1

A planet moves around the Sun. At a point P, it is closed to the Sun at a distance d₁, and has speed v₁. At another point Q, when it is farthest from the Sun at a distance d₂, its speed will be

A

B

C

D

Solution
Question 10
4 / -1

A satellite of mass m is revolving round the earth at a height R above the surface of the earth. If g is the gravitational field intensity at the earth’s surface and R is the radius, the K.E. of the satellite will be :

A

B

C

D

Solution