| 1 |
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
|
| 2 |
Weight of the body is__________ to the gravity force between body and earth: |
- A. Less than
- B. Greater than
- C. Equal
- D. Constant
|
| 3 |
The value of g on moon's surface is 1.6 ms<sup>-2</sup>. What will be the weight of a a 100 kg body on the surface of the moon? |
- A. 100 N
- B. 160 N
- C. 1000 N
- D. 1600 N
|
| 4 |
Earth revolves around the: |
- A. Moon
- B. Sun
- C. Glaxy
- D. None
|
| 5 |
The value of gravitational constant is, G is: |
- A. 6.67× 10-10 Nm2/Kg2
- B. 6.67× 10-11 Nm2/Kg2
- C. 6.67× 10-11
- D. None
|
| 6 |
The speed geostationary satellite with respect to earth is: |
- A. 8.33 kms<sup>-1</sup>
- B. 3.87 ms<sup>-1</sup>
- C. 32 ms<sup>-1</sup>
- D. Zero
|
| 7 |
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
|
| 8 |
The force with which earth attracts a body towards its center is equal to its |
- A. Mass
- B. Weight
- C. Charge
- D. Radius
|
| 9 |
The orbital speed of a low orbit satellite is |
- A. Zero
- B. 8 ms-1
- C. 800 ms-1
- D. 8000 ms-1
|
| 10 |
Moon complete it's one revolution around earth is days: |
- A. 22
- B. 23
- C. 27.3
- D. 25
|
