# Gravitation: The Universal Force of Attraction Acting Between all Matter

In this quiz, you will find questions related to gravity, the gravitational force of attraction, and Newton’s theory of gravitation.

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The weight of an object can be zero but the mass of an object can never be zero.

True False

What will be the value of acceleration due to gravity on the surface of the earth if the radius of the earth suddenly decreases to 60% of its present value, keeping the mass of the earth unchanged?

9.81 m/s2 5.89 m/s2 16.35 m/s2 27.25 m/s2

Which scientist introduced the universal law of gravitation?

Albert Einstein Isaac Newton Stephen Hawking Nikola Tesla

A body weighs 500 N on the surface of the earth. How much would it weight half way below the surface of the earth?

1000 N 500 N 250 N 125 N

The time – period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time – period will become

10 hours 20 hours 40 hours 80 hours

A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is

Positive Negative Zero may be positive or negative

What would be the duration of the year if the distance between the earth and the sun gets doubled?

1032 days 129 days 365 days 730 days

What happens to the gravitational potential at the centre of the uniform spherical shell which shrinks gradually?

Remains constant Decreases Increases Oscillates

What happens to the weight of the body if the weight becomes $$\frac{1}{16}$$ at a certain. Also, consider the radius of the earth to be R.

4R 15R 5R 3R

Choose the factor on which the orbital velocity does not depend when the satellite is orbiting close to the earth’s surface

The mass of the earth The mass of the satellite The orbital radius The radius of the earth

Gravitational force is _____

An imaginary force

A long-range force

A short-range force

The strongest fundamental force

The value of acceleration due to gravity of earth at the equator is less than that of the poles due to _____

Shape and rotation of the earth

Mass of the sun

Mass of the earth

Mass of the moon

If a body of mass m is taken out from a point below the surface of earth equal to half the radius of earth, R, to a height R above the earths surface, then work done on it will be

(5/6) mgR

(6/7) mgR

(7/8) mgR

(8/9) mgR

What is the increase in the potential energy of the body with mass m if the body is taken at the height h which is equal to the radius of the earth?

mgR

2mgR

mgR/2

mgR/4

Consider a body of mass m which needs to be moved from an orbit of radius 2R to 3R. What is the energy required

GMm/12R^2

GMm/6R

GMm/8R

GMm/3R^2

Quiz/Test Summary
Title: Gravitation: The Universal Force of Attraction Acting Between all Matter
Questions: 15
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