MCQs on Gravitation – Chapter -8

MCQs on Gravitation

Chapter -8 Physics Class 11

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MCQs on Gravitation Physics for Class 11 Chapter -8

Other Chapter MCQs 

The time rate of change of the angular momentum of a single particle about the origin is

1. (dl / dt) = r X F
2. dl / dt) = r
3. dl / dt) = r /F
4. dl / dt) = r *r X F

Answer 1

The force of attraction between a hollow ball of consistent density and a point mass situated outside is

1. As if the full mass of the ball is concentrated at the left side of the ball
2. As if the full mass of the ball is concentrated at the center of the ball
3. As if the full mass of the ball is concentrated at the right side of the ball
4. As if the full weight of the ball is concentrated at the right side of the ball

Answer 2

The force of attraction due to hollow ball of consistent density on a point mass situated inside it is

1. 1000
2. 100
3. 10
4. 0

Answer 4

Gravitational force of attraction between two particles of masses X and Y is

1. Directly proportional to the distance between them
2. Inversely proportional to the distance between them
3. Directly proportional to the square of the distance between them
4. Inversely proportional to the square of distance between them

Answer 4

The principle of superposition states

1. Each gravitational force works independently and uninfluenced by other bodies
2. Each gravitational force works independently and influenced by other bodies
3. Each gravitational force works dependently and uninfluenced by other bodies
4. Each gravitational force works dependently and influenced by other bodies

Answer 1

Kepler second law of planet motion states:

1. Gravity force on a planet is tangential and angular momentum conservers
2. Gravity force on a planet is central and angular momentum conservers
3. Gravity force on a planet is central and angular momentum does not conserve.
4. Gravity force on a planet is tangential and angular momentum conservers

Answer 2

Kepler third law of planet motion states:

1. The orbital period of a planet is proportional  to the cube of the semi major axis of the elliptical orbit of the planet
2. The square of the orbital period of a planet is proportional  to the cube of the semi major axis of the circular orbit of the planet
3. The square of the orbital period of a planet is proportional  to the cube of the semi major axis of the elliptical orbit of the planet
4. The square of the orbital period of a planet is proportional  to the cube of the semi major axis of the square orbit of the planet

Answer 3

1. Kepler first law of planet motion states:
2. All planets move in a circular orbit with sun at the center
3. All planets move in an elliptical orbit with sun at one of the focal points
4. All planets move in an elliptical orbit with sun at both the focal points
5. All planets move in an circular orbit with sun at both the focal points

Answer 2

Gravitational force is:

1. Conservative force
2. Not a Conservative force
3. Both a Conservative force and Non Conservative force
4. Neither Conservative nor Non Conservative

Answer 1

The total energy of an elliptical orbit is

1. Zero
2. Positive
3. Negative
4. Infinity

Answer 3