| 1 |
Orbital velocity v<sub>o</sub> = |
- A. √gR
- B. √RG
- C. gR
- D. gR<sup>2</sup>
|
| 2 |
The first man who came up with the idea of gravity was? |
- A. Issac Newton
- B. Einstein
- C. Faraday
- D. J,S Joseph
|
| 3 |
The gravitational force has the ________ relation with the distance between two masses: |
- A. Direct
- B. Inverse
- C. Constant
- D. None
|
| 4 |
A body is placed at height 'h' above the surface of the Earth.The value of 'g' is given by |
- A. gh = Me/(R + h)2
- B. gh = GMe/(R +h)2
- C. gh = GMe/R2h
|
| 5 |
Law of Gravitation is consistence with: |
- A. 1st Law of motion
- B. 2nd Law of motion
- C. 3rd Law of motion
- D. Law of momentum
|
| 6 |
Mass of earth is Me is : |
- A. Me = 6× 1024 kg
- B. 6× 1024 kg
- C. 7× 1024 kg
- D. 6× 1024 Mg
|
| 7 |
Newton's law of gravitation resembles with |
- A. 1st law of motion
- B. 2nd law of motion
- C. 3rd law of motion
- D. Law of gravitation
|
| 8 |
Earth's gravitational force of attraction vanishes at: |
- A. 6400 km
- B. Infinity
- C. 42300 km
- D. 1000 km
|
| 9 |
The orbital speed of a low orbit satellite is: |
- A. Zero
- B. 8 ms<sup>-1</sup>
- C. 800 ms<sup>-1</sup>
- D. 8000 ms<sup>-1</sup>
|
| 10 |
The value of g at a height one Earth's radius above the surface of the Earth is |
- A. 2 g
- B. 1/2 g
- C. 1/3 g
- D. 1/4 g
|
