| 1 |
kgm<sup>2</sup>s<sup>-2</sup> = _________ |
- A. Newton
- B. Joule
- C. Watt
- D. Coulomb
|
| 2 |
Stretched how has type of energy: |
- A. K.E
- B. mgh
- C. P.E
- D. Elastic P.E
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| 3 |
If the velocity of the body becomes double then its kinetic energy will: |
- A. Remain the same
- B. Become double
- C. Become four times
- D. Become half
|
| 4 |
Which one of the following converts light energy into electrical energy? |
- A. Electric bulb
- B. Electric generator
- C. Photo cell
- D. Electric cell
|
| 5 |
The unit of kinetic energy is: |
|
| 6 |
In falling object potential energy is covered to: |
- A. K.E
- B. Force
- C. P.E
- D. Nil
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| 7 |
According to law of conservation of energy increases in P.E is equal to: |
- A. Increase K.E
- B. Decrease in K.E
- C. Decrease in P.E
- D. None
|
| 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
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| 9 |
A temperature rise in the environment disturbs life called: |
- A. Air pollution
- B. Land pollution
- C. Noice pollution
- D. Thermal pollution
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| 10 |
Kinetic and potential energy are the kinds of energy: |
- A. Chemical
- B. Nuclear
- C. Light
- D. Mechanical
|
