| 1 |
The Detector in Photo phone is made up of. |
- A. Cadmium
- B. Germanium
- C. Selenium
- D. Silicon
|
| 2 |
The ability of reveal the minor details of an object under examination is called. |
- A. Resolving power
- B. Magnification
- C. Scattering
- D. Reflection
|
| 3 |
The focal length of convex lens |
- A. Negative
- B. Positive
- C. small
- D. Large
|
| 4 |
In Michelson's experiment the relation used to find the speed of light is |
- A. 16 fc
- B. 1/16 fd
- C. 16 fd
- D. 16/fd
|
| 5 |
More details of an object can be seen with a microscope by using |
- A. Green light
- B. Red light
- C. Yellow light
- D. Blue light
|
| 6 |
Reapters are placed in new system at distance of. |
- A. 30 km
- B. 50 km
- C. 80 km
- D. 100 km
|
| 7 |
Using a graded Index fibre, the time difference is reduced to about. |
- A. 1 ns per km
- B. 33 ns per 100 km
- C. 33 ns per km
- D. 1 ns per 100 km
|
| 8 |
A convex lens can be used as |
- A. Simple microscope
- B. Compound microscope
- C. Telescope
- D. Spectrometer
|
| 9 |
The light signal in Opticla fiber must be regenerated by advice called. |
- A. Regenerator
- B. Generator
- C. Repeater
- D. Diode
|
| 10 |
__ will travel faster than other through an optical fibre. |
- A. Ultraviolet light
- B. Visible light
- C. Infrared light
- D. White light
|
