Gravitation: The universal force of attraction acting between all matter

This is an MCQ-based quiz on Gravitation.

This includes Gravity, Clouds, Wind, and Earth’s Magnetic Field.

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The unit of weight in the S.I. system is:

kg m2 Newton ms-2 ms

The mass of the earth is:

6.4 × 10^24 6 × 10^10 kg 6 × 10^24 kg 6 × 10^19 kg

The radius of the earth is:

6.4 × 10^-6 m 6.4 × 10^6 m 4.6 × 10^6 m 6.4 × 10^4 m

The value of acceleration due to gravity:

Is the same on the equator and poles

Is least on poles

Is least on the equator

Increases from pole to equator

The gravitational constant is denoted by which symbol?

A boy is whirling a stone tied to a string in a horizontal circular path. If the string breaks, the stone

will continue to move in the circular path will move along a straight line towards the centreof the circular path will move along a straight line tangential to the circular path will move along a straight line perpendicular to the circular path away from the boy

The gravitational force between two objects is F. If masses of both objects are halved without changing the distance between them, then the gravitational force would become

F/4 F/2 F 2F

Two objects of different masses falling freely near the surface of the moon would

have same velocities at any instant have different acceleration experience forces of same magnitude undergo a change in their inertia

The value of quantity G in the law of gravitation

Depends on mass of Earth only

Depends on radius of Earth only

Depends on both mass and radius of Earth

Is independent of mass and radius of the Earth

In the relation F = GMm/d2, the quantity G

Depends on the value of g at the place of observation

Is used only when the Earth is one of the two masses

Is greatest at the surface of the Earth

Is universal constant of nature

The mass of moon is about 0.012 times that of the earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:

Same as that on the earth About one-fifth of that on the earth About one-sixth of that on the earth About one-fourth of that on the earth

An apple falls from a tree because of the gravitational attraction between the earth and the apple. If F1 is the magnitude of the force exerted by the earth on the apple and F2 is the magnitude of the force exerted by the apple on the earth, then

F1 is very much greater than F2 F2 is very much greater than F1 F1 and F2 are equal F1 is only a little greater than F2

The earth and the moon are attracted to each other by gravitational force. The earth attracts the moon with a force that is:

More than that exerted by the moon Same as that exerted by the moon Less than that exerted by the moon Not related to that exerted by the moon

A stone is released from the top of a tower of height 19.6 m. Then its final velocity just before touching the ground will be:

384.16 m/ s 196 m/s 19.6 m/s 3841.4 m/s(Take g = 9.8 m/s2)

When a piece of cork is put into the water it starts floating on the surface of water due to the upward buoyant force from water. If the cork is pushed more inside the water by applying the force than the buoyant force:

Will increase as the cork is immersed into the water Will decrease as the cork is immersed into the water Will first increase and then decrease as the cork is immersed more into the water Will remain the same as long as the cork is inside the water

If the gravitational attraction of the Earth suddenly disappears, which of the following statements will be true?

The weight of body will become zero but the mass will remain same. The weight of a body will remain same but the mass will become zero. Both mass and weight become zero. Neither mass nor weight becomes zero.

When a ship floats in sea water

The weight of water displaced is greater than the weight of ship The weight of water displaced is less than the weight of the ship The weight of water displaced is equal to the weight of the ship It displaces no water.

When a mango falls from a mango tree then

Only the Earth attracts the mango. Only the mango attracts the Earth. Both the mango and the Earth attract each other. Both the mango and the Earth repel each other.

An apple falls from a tree because of gravitational attractionbetween the Earth and the apple. If F1 is the magnitude of force exerted by the Earth on the apple and F2 is the magnitude of force exerted by the apple on the Earth, then

F1 is very much greater than F2 F2 is very much greater than F1 F1 is only a little greater than F2 F1 and F1 are equal

The SI unit of pressure is

N/m

N/m^2

N^2/m^2

Quiz/Test Summary

Title: Gravitation: The universal force of attraction acting between all matter

Questions: 20

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