Question

Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be:

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4 times

1/4 times

1/2 times

Unchanged

The gravitational force causes

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Tides

Motion of moon

None of them

Both

Newton’s law of gravitation applies to

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Small bodies only

Plants only

All bodies irrespective of their size

For solar system

Even though stone also attracts earth towards itself, earth does not move

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Because of greater mass of earth

Because of lesser mass of stone

Force exerted by stone is less

Force exerted earth is large

The weight of an object is:

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Greater on earth and lesser on Moon

Lesser on earth and Greater on earth

Equal on both earth and Moon

None of these

When an object is thrown vertically upward, on reaching the highest point, the value of acceleration due to gravity will be

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4.9 m/s2

9.8 m/s2 upwards

9.8 m/s2 towards the ground

0 m/s2

Weight of an object has S.I, unit of:

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Newton

kg

N/Kg

Kg/N

Weight of an object on the surface of the moon is

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1/2 th of the weight of object on the surface of the earth

1/4 th of the weight of object on the surface of the earth

1/6 th of the weight of object on the surface of the earth

1/8 th of the weight of object on the surface of the earth

Which of the statements is correct?

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Mass is constant and weight is variable

Mass is variable and weight is constant.

Both Mass and weight are variable

Both Mass and weight are constant.

If the acceleration due to gravity at a place is more, the weight of that object will:

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Decrease

Increase

Remains same

None of the above

If the distance between objects decreases, then the gravitational force between the objects will:

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decrease

Increase

remain same

Can't be decided

Weight of the object is:

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More at the equator and less at poles

Same at poles and equator

Depend on Mass of the object

More at poles and less at equator

The mass of an physical object is

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Not the same thing as weight of an object

The amount of matter contained in the object, independent of the position of object

Measure of the extent to which a particle or object resists a change in its direction or speed when a force is applied.

All of the above

If the distance between the object increase, mass remaining same then the gravitational forces between the object will :-

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Increase

Decrease

Remain same

None of the above.

The S. I. units of mass, force and weight are respectively:

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Kg, N, N

N, Kg, N

N, N, Kg

Kg, N, Kg

When the medium between two bodies changes, force of gravitation between them :

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will increase

will decrease

will change according to the environment

remains same

Assertion : The weight of an object is more at the poles as compared to the equator. Reason: Acceleration due to gravity is more at the poles

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(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

(c) If Assertion is correct but Reason is incorrect

(d) If Assertion is incorrect but Reason is correct

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Answer 1

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