Physics 9-Ch5 (Gravitation)-MCQs

 

Table of Contents

• Earth's gravitational force of the attraction vanishes at
• Value of g increases with the
• The value of g at the height one Earth's radius above the surface of the Earth is:
• The value of g of g on the moon's surface is 1.6 ms-2. What will be the weight of a 100 kg body on the surface of the moon?
• The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is:
• The orbital speed of a low orbit satellite is

Earth's gravitational force of the attraction vanishes at

Difficulty: Easy

A:

6400 km

B:

Infinty

C:

42300 km

D:

1000 km

Value of g increases with the

Difficulty: Easy

A:

Increase in mass of the body

B:

Increase in altitude

C:

Decrease in altitude

D:

None of the above

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

Difficulty: Easy

A:

2g

B:

1/2 g

C:

1/3 g

D:

1/4 g

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

Difficulty: Easy

A:

100 N

B:

160 N

C:

1000 N

D:

1600 N

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

Difficulty: Easy

A:

850 km

B:

1000 km

C:

6400 km

D:

42,300 km

The orbital speed of a low orbit satellite is

Difficulty: Easy

A:

Zero

B:

$8�{�}^{-1}$

C:

$800�{�}^{-1}$

D:

$8000�{�}^{-1}$