| 1 |
By increasing the amount of stretch in spring the force exerted will |
- A. Increase
- B. One watt
- C. One erg
- D. One joule
|
| 2 |
The tides raise in the sea roughly |
- A. Once a day
- B. Twice a day
- C. Three a day
- D. Four time a day
|
| 3 |
A body of mass 1.0 Kg dropped from the top of a tower of highest 50 m, what will be its K.E. 10 m below the top |
- A. 400 J
- B. 490 J
- C. 49 J
- D. 98 J
|
| 4 |
The unit of energy is same as that of |
- A. Power
- B. Work
- C. Torque
- D. Density
|
| 5 |
The K.E. of bullet of mass 500 gm moving at a speed of 200 ms-1 |
- A. 250 J
- B. 125 J
- C. 2500 J
- D. 10,000 J
|
| 6 |
If a body of mass 5 kg is raised vertically through a distance of 1 m, then work done is. |
- A. 49 J
- B. 4.9 J
- C. 490 J
- D. 0.49 J
|
| 7 |
_______ is bio fuel |
- A. Water
- B. Petrol
- C. Ethanol
- D. Oil
|
| 8 |
When the rocket moves away from the earth, the work against gravity |
- A. Remains constant
- B. Varies directly with distance
- C. Varies inversely with distance
- D. Varies inversely with square of distance
|
| 9 |
The work done in gravitational field |
- A. Depend upon the path
- B. Does not depend upon the path
- C. (+)ve
- D. Zero
|
| 10 |
Which one is non renewable source of energy. |
- A. Hydro electric
- B. Bio mass
- C. Tides
- D. Oil
|