Question # 1

Law of Gravitation is consistence with:

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1st Law of motion

2nd Law of motion

3rd Law of motion

Law of momentum

Magnetic force is an example of :

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Action at a distance

Force

Torque

Nil

Earth's gravitational force of attraction vanishes at:

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6400 km

Infinity

42300 km

1000 km

Speed of the satellites of GPS around earth is:

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3.87 ms^-1

387 kms^-1

3.87 kms^-1

38.7 kms^-1

The radius R of Earth is

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6.4 x 106 m

6.4 x 108 m

6.4 x 1010 m

6.4 x 1012 m

The value of g at a height one Earth's radius above the surface of the earth is:

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2g

1/2 g

1/3 g

1/4 g

Moon complete its one revolution around the earth is ___________ DAYS:

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29

27.3

30

21

The value of g on moon's surface is 1.6 ms^-2. what will be the weight of a 100 kg body on the surface of the moon?

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100 N

160 N

1000 N

1600 N

Gravitational force is a

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Contacted force

Non-contact force

Electrical force

Charging force

Moon is nearly _________ km away from earth.

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6 x 10²⁴

380000

199.62 km

30000

Newton's law of gravitation resembles with

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1st law of motion

2nd law of motion

3rd law of motion

Law of gravitation

Earth's gravitational force of attraction vanishes at

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6400 km

Infinity

42300 km

1000 km

At the surface of the earth value of 'g' is measured by using formula:

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g=GMe/R

g = GMe/R²

g = 2GMe/R²

g = GMe/2 R

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