1 
The earth also completes its one revolution about its axis in. 
 A. 1 Hours
 B. 6 Hours
 C. 13 Hours
 D. 24 Hours

2 
At the surface of the earth value of 'g' is measured by using formula: 
 A. g=GMe/R
 B. g = GMe/R<sup>2</sup>
 C. g = 2GMe/R<sup>2</sup>
 D. g = GMe/2 R

3 
The orbital velocity of a satellite revolving at height 'h' above the surface of Earth is given by 

4 
Value of g increases with the 
 A. Increases in mass of the body
 B. Increase in altitude
 C. Decreases in altitude
 D. None of the above

5 
Orbital velocity v<sub>o</sub> = 
 A. √gR
 B. √RG
 C. gR
 D. gR<sup>2</sup>

6 
The value of g on moon's surface is 1.6 ms2. What will be the weight of a 100 kg body on the surface of the moon? 
 A. 100 N
 B. 160 N
 C. 1000 N
 D. 1600 N

7 
The value of 'g' is greater at: 
 A. Moon
 B. Hills
 C. Sea leavel
 D. Desert

8 
The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is 
 A. 850 km
 B. 1000 km
 C. 6400 km
 D. 42,300 km

9 
The value of g on moon's surface is 1.6 ms<sup>2</sup>. what will be the weight of a 100 kg body on the surface of the moon? 
 A. 100 N
 B. 160 N
 C. 1000 N
 D. 1600 N

10 
Weight of the body when we increase its height from earth's surface. 
 A. Increase
 B. Decrease
 C. Remain constant
 D. None
