Question # 1

The orbital speed of a low orbit satellite is:

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Zero

8 ms^-1

800 ms^-1

8000 ms^-1

S.I unit of gravitational field strength is:

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Nkg

Nkg^-1

Nkg^-2

Nkg^-3

The first man who gave the idea of gravity:

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Hero

Einstein

Newton

Faraday

________ is the height of an object or place above sea level.

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Altitude

Depth

Sun

Moon

A body is placed at height 'h' above the surface of the Earth.The value of 'g' is given by

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gh = Me/(R + h)2

gh = GMe/(R +h)2

gh = GMe/R2h

The weight of a body is 100 N its weight in deep space is :

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100 N

50 N

25 N

0 N

Gravitational force is a

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Contacted force

Non-contact force

Electrical force

Charging force

S.I unit of G is:

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Nm^-2 kg²

Nm^-2Kg^-2

Nm²kg^-2

Nm²kg^-3

The value of 'g' is greater at:

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Moon

Hills

Sea leavel

Desert

The gravitational force has the ________ relation with the distance between two masses:

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Direct

Inverse

Constant

None

The value of gravitational constant is, G is:

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6.67× 10-10 Nm2/Kg2

6.67× 10-11 Nm2/Kg2

6.67× 10-11

None

Anything that rotates around a planet is called:

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Star

Sun

Moon

Satellite

The Mars has value of g

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25.94 m/sec2

3.73 m/sec2

1.62 m/sec2

8.87 m/sec2

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