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Imagine a straight tunnel is bored through the earth and a small particle is allowed to move in it with zero initial velocity. It will

Execute S.H.M.

Come out from other side

Travel with constant velocity

Stick at the middle of the tunnel

The velocity of escape from solar system is

49 km/sec

52 km/sec

42 km/sec

53 km/sec

The ratio of gravitational potential at the centre of the solid sphere to the gravitational potential on the surface of the sphere is

5 : 2

2 : 5

5 : 3

3 : 2

What is the horizontal velocity of a satellite when it is projected at 800 km above the surface of the earth so that it will have a circular orbit about the earth? (Given, radius of the earth is 6400 km)

17.5 km/sec

1.5 km/sec

27.5 km/sec

7.5 km/sec

The gravitational potential of a spherical shell is ______ anywhere inside the shell.

The same

Different

Zero

Decreased from surface to centre

What would be the length of the day if the earth contracts to half its radius?

12 hours

24 hours

6 hours

48 hours

“The ratio of inertial masses of two bodies is same as that of their gravitational masses.” This statement

Is always violated

Always holds good sometimes holds good

Sometimes holds good

Sometimes holds and sometimes does not

Assuming the earth to be a uniform sphere, the potential at any point on the surface of the earth with radius R, is expressed as

-gR

-GR2

-gR2

gR

In the first second of its flight, a rocket ejects 1/50 of its mass with a relative velocity of 2200ms-1. What is the acceleration of the rocket?

34.2 m/s2

34.0 m/s2

30.2 m/s2

36.2 m/s2

A ray of light is bent by the sun’s gravitational field. This is explained during a

Lunar eclipse

Solar eclipse

Full moon day

New moon day

Execute S.H.M.

Come out from other side

Travel with constant velocity

Stick at the middle of the tunnel

The velocity of escape from solar system is

49 km/sec

52 km/sec

42 km/sec

53 km/sec

The ratio of gravitational potential at the centre of the solid sphere to the gravitational potential on the surface of the sphere is

5 : 2

2 : 5

5 : 3

3 : 2

What is the horizontal velocity of a satellite when it is projected at 800 km above the surface of the earth so that it will have a circular orbit about the earth? (Given, radius of the earth is 6400 km)

17.5 km/sec

1.5 km/sec

27.5 km/sec

7.5 km/sec

The gravitational potential of a spherical shell is ______ anywhere inside the shell.

The same

Different

Zero

Decreased from surface to centre

What would be the length of the day if the earth contracts to half its radius?

12 hours

24 hours

6 hours

48 hours

“The ratio of inertial masses of two bodies is same as that of their gravitational masses.” This statement

Is always violated

Always holds good sometimes holds good

Sometimes holds good

Sometimes holds and sometimes does not

Assuming the earth to be a uniform sphere, the potential at any point on the surface of the earth with radius R, is expressed as

-gR

-GR2

-gR2

gR

In the first second of its flight, a rocket ejects 1/50 of its mass with a relative velocity of 2200ms-1. What is the acceleration of the rocket?

34.2 m/s2

34.0 m/s2

30.2 m/s2

36.2 m/s2

A ray of light is bent by the sun’s gravitational field. This is explained during a

Lunar eclipse

Solar eclipse

Full moon day

New moon day

Escape velocity, gravitational potential etc are the topics included

IIT JEE Physics AIEEE Physics: Gravitation AIPMT Physics: Gravitation Gravitation XI CBSE I.SC

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