Physics Questions and Answers
| 113. |
Choke is used to |
| |
- A. reduce the current in AC circuit
- B. reduce the current in DC circuit
- C. convert Ac to Dc
- D. convert Dc to AC
|
| 114. |
The apparatus used in submarines to give clear view of the object on the surface of the ocean or ground is known as |
| |
- A. telescope
- B. periscope
- C. stereoscope
- D. sectant
|
| 115. |
A red object when seen through a thick blue glass appears |
| |
- A. Black
- B. Blue
- C. White
- D. Green
|
| 116. |
Electrons can be accelerated to very high energies by means of |
| |
- A. thyratrons
- B. magnetrons
- C. betatrons
- D. cyclotrons
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