| 1 |
If the direction of motion of the force is perpendicular to the direction of motion of the body then work done will be: |
- A. Maximum
- B. Minimum
- C. Zero
- D. None of these
|
| 2 |
The work done will be zero when the angle between the force and the displacement is: |
- A. 45<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
- B. 60<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
- C. 90<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
- D. 180<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
|
| 3 |
Solar cell is are also known as: |
- A. Electric cell
- B. Photo Cell
- C. Sun cells
- D. Nuclear cells
|
| 4 |
The power of electric kettle is 500W and takes 2s to heat up, find heat generated? |
- A. E = 250 w
- B. E = 1000 w
- C. E = 10000 J
- D. 1KJ
|
| 5 |
Above of mass 50 kg is raised to a height of 3m. what is its P.E |
- A. 500 J
- B. 1000 J
- C. 1500 J
- D. 2000 J
|
| 6 |
One horse power is equal to: |
- A. 746 W
- B. 749 W
- C. 764 W
- D. 794 W
|
| 7 |
Einstein's mass-energy equation is |
- A. E = mc
- B. E = mc2
- C. E = 2mc
- D. E = m2c
|
| 8 |
In Einstein's mass-energy equation ,c is the |
- A. Speed of sound
- B. Speed of light
- C. Speed of electron
- D. Speed of Earth
|
| 9 |
The energy stored in coal is: |
- A. Heat energy
- B. Kinetic energy
- C. Chemical enegy
- D. Nuclear energy
|
| 10 |
1 hp is equal to : |
- A. 747 W
- B. 746 W
- C. 748 W
- D. 1000 W
|
