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9th Class Physics Chapter 5 Gracitation English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

Everybody in the universe attracts other body with a force which is

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Directly proportional to the product of their masses

Inversely proportional to the product of their masses

Directly proportional to the distance between them

Directly proportional to the square of the distance between them

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Question # 2

Earth's gravitational force of attraction vanishes at:

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6400 km

Infinity

42300 km

1000 km

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Question # 3

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

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2 g

1/2 g

1/3 g

1/4 g

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Question # 4

Weight of the body when we increase its height from earth's surface.

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Increase

Decrease

Remain constant

None

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Question # 5

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

Earth is:

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2 g

1/2 g

1/3 g1

1/4 g

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Question # 6

Gravitational force is a:

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Electric force

Magnetic force

Reactional force

Electromotive force.

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Question # 7

The speed of satellites in GPS is:

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8.73 kms^-1

3.87 ms^-1

32 ms^-1

3.87 kms^-1

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Question # 8

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

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27.3

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Question # 9

The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth.

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850 km

1000 km

6400 km

42,300 km

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Question # 10

The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is

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850 km

1000 km

6400 km

42,300 km

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Question # 11

The orbital velocity of a satellite revolving at height 'h' above the surface of Earth is given by

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Question # 12

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

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1/2 g

1/3 g

1/4 g

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