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physics-9-chapter-4-turning-effect-of-force-4
1.
What is the value of gravitational constant?
a) .673 x 10
-11
Nm
2
Kg
-2
b) 7.763 x 10
-11
Nm
2
c) 3.676 x 10
-11
Nm
-2
d) 7.676 x 10
-11
N Kg
-2
2.
What is the SI unit of gravitational constant?
a) SI unit = Nm
2
Kg
-2
b) SI unit = Nm
-2
Kg
-2
c) SI unit = Nm
2
Kg
2
d) SI unit = Nm
-2
Kg
2
3.
What is the value of ‘G’?
a) .673 x 10
-11
Nm
2
Kg
-2
b) 7.763 x 10
-11
Nm
2
c) 3.676 x 10
-11
Nm
-2
d) 7.676 x 10
-11
N Kg
-2
4.
What is the SI unit of ‘G’?
a) SI unit of ‘G’= Nm
2
Kg
-2
b) SI unit of ‘G’= Nm
-2
Kg
-2
c) SI unit of ‘G’= Nm
2
Kg
2
d) SI unit of ‘G’= Nm
-2
Kg
2
5.
What is the result of gravitational force of attraction between the Earth and the object?
a) Weight of the object
b) Weight of the earth
c) Mass of the earth
d) Length of the object
6.
What is the mass of mars?
a) 6.42 x 10
23
Kg
b) 6.42 x 10
21
Kg
c) 6.42 x 10
19
Kg
d) 6.42 x 10
45
Kg
7.
What is the radius of mars?
a) 3370 km
b) 33.70 km
c) 337.0 km
d) 3.370 km
8.
Which of the following is due to the gravitational force between the body and the Earth?
a) eight of the object
b) Weight of the earth
c) Mass of the earth
d) Length of the object
9.
Find the acceleration due to gravity on the surface of the Mars. The mass of Mars is 6.42x10
23
kg and its radius is 3370 km?
a) 3.77 ms
-2
b) 37.7 ms
-2
c) 377.0 ms
-2
d) 0.377 ms
-2
10.
Which of the following is the same in the force of attraction of mass m
1
and mass m
2
?
a) Magnitude of force
b) Direction of force
c) Both magnitude and direction of force
d) Neither magnitude nor direction of force
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