Gravitation Test

Result

Gravitation Test - 21

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Weekly Quiz Competition

Question 1
4 / -1

Weight of body of mass m decreases by 1% when it is raised to height h above the earth’s surface. If the body is taken to a depth h in a mine. change in its weight is

A
2% decreases

B
0.5% decreases

C
1% increases

D
0.5% increases

Solution
Question 2
4 / -1

If density of earth increased 4 times and its radius becomes half of then out weight will be ......

A
Four times it present calue

B
doubled

C
Remain same

D
halved
Question 3
4 / -1

A man can jump to a height of 1.5 m on a planet A what is the height ne may be able to jump on another planet whose density and radius are respectively one- quater and one- third that of planet A

A
1.5 m

B
15 m

C
18 m

D
28 m

Solution
Question 4
4 / -1

The acceleration of a body due to the attraction of the earth (radius R) at a distance 2R from the surface of the earth is = ...............
(g = acceleration due to gravity at the surface of earth)

A
g/9

B
g/3

C
g/4

D
9

Solution
Question 5
4 / -1

The height at which the weight of a body becomes 1/16 th its weight on the surface of (radius R) is

A
3R

B
4R

C
5R

D
15R

Solution
Question 6
4 / -1

The tidal waves in the sea are primarily due to

A
The gravitational effect of the moon on the earth

B
The gravitational effect of the sun on the earth

C
The gravitational effect of venus on the earth

D
The atmospheric effect of the earth itself
Question 7
4 / -1

The atmosphere is held to the earth by

A
Winds

B
Gravity

C
Clouds

D
None of these
Question 8
4 / -1

Two identical solid copper spheres of radius R are placed in contact with each other. The gravitational attraction between them is proportional to

A
R²

B
R^–2

C
R⁴

D
R^–4

Solution
Question 9
4 / -1

The gravitational force F_g between two objects does not depend on

A
Sum of the masses

B
Product of the masses

C
Gravitational constant

D
Distance between the masses
Question 10
4 / -1

Gravitational mass is proportional to gravitational

A
Field

B
Force

C
Intensity

D
All of these