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Physics 9 Chapter 5 - Gravitation - 9
1.
At a height equal to two Earth radius above the surface of the Earth, g becomes ......................of its value on the Earth?
a) One fifth
b) One fourth
c) One tenth
d) One ninth
2.
Calculate the value of g, the acceleration due to gravity at an altitude 1000 km. The mass of the Earth is 6.0 x 10
24
kg. The radius of the Earth is 6400 km?
a) 7.4 ms
-2
b) 7.4 ms
-1
c) 7.3 ms
-1
d) 7.3 ms
-2
3.
The value of g at a height one Earth’s radius above the surface of the Earth is...........?
a) 1/3g
b) 2 g
c) 1/4g
d) 1/2g
4.
What is the radius of earth?
a) 740 km
b) 6400 km
c) 7400 km
d) 640 km
5.
Upon which of the following, the value of g on the surface of a celestial object depends on?
a) (d) Length
b) (c) Radius
c) (b) Mass
d) (a) Both b and c
6.
What is the value of ‘g’ on Sun?
a) 35.87 ms
-2
b) 28.87 ms
-2
c) 274.2 ms
-2
d) 27.42 ms
-2
7.
On which of the following, the value of ‘g’ is 274.2 ms
-2
?
a) Saturn
b) Sun
c) Pluto
d) Earth
8.
What is the value of ‘g’ on Mercury?
a) 3.7 ms
-2
b) 28.87 ms
-2
c) 35.87 ms
-2
d) 27.42 ms
-2
9.
On which of the following, the value of ‘g’ is 3.7 ms
-2
?
a) Saturn
b) Mercury
c) Earth
d) Pluto
10.
What is the value of ‘g’ on Venus?
a) 27.42 ms
-2
b) 35.87 ms
-2
c) 28.87 ms
-2
d) 8.87 ms
-2
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