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Physics 9 Chapter 5 - Gravitation - 7
1.
What is the gravitational field strength near the surface of the earth?
a) 6.8 N kg
-1
b) 18.9 N kg
-1
c) 12.68 N kg
-1
d) 10 N kg
-1
2.
What is the SI unit of gravitational field strength?
a) N
2
kg
b) N
-1
kg
-1
c) kg
-1
d) N kg
3.
Which of the following represents the mass of the earth?
a) E
m
b) M
c) M
m
d) M
e
4.
What is the formula of weight?
a) Weight = m + g
b) Weight = m / g
c) Weight = m - g
d) Weight = m x g
5.
Which of the following formula for mass of the earth is CORRECT?
a) Me = (R
2
+ g) / G
b) Me = (R
2
- g) - G
c) Me = (R
2
g) + G
d) Me = (R
2
g) / G
6.
What is the value of radius of earth?
a) 6.4 x 10
6
m
b) 46 x 10
6
m
c) 64 x 10
6
m
d) 4.6 x 10
6
m
7.
What is the value of ‘g’ on the surface of earth?
a) 8.8 ms
-2
b) 10 ms
-2
c) 11.9 ms
-2
d) 12.6 ms
-2
8.
The value of g is inversely proportional to the.......................?
a) Radius of earth
b) Mass of the earth
c) Cube of radius of earth
d) Square of radius of earth
9.
When which of the following increases, the value of ‘g’ decreases?
a) Altitude
b) Amplitude
c) Magnitude
d) Mass of earth
10.
What is the value of mass of earth?
a) 6.0 x 10
22
kg
b) 6.0 x 10
24
kg
c) 0.6 x 10
24
kg
d) 0.6 x 10
22
kg
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