| 1 |
The light signal in Opticla fiber must be regenerated by advice called. |
- A. Regenerator
- B. Generator
- C. Repeater
- D. Diode
|
| 2 |
A layer over the central core of the jacke is called. |
- A. Jacket
- B. Plastic
- C. Cladding
- D. Rubber
|
| 3 |
The optical fibre is covered for protection by |
- A. Glass jacket
- B. Plastic jacket
- C. Steel jacket
- D. Diamond jacket
|
| 4 |
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
|
| 5 |
The ability of reveal the minor details of an object under examination is called. |
- A. Resolving power
- B. Magnification
- C. Scattering
- D. Reflection
|
| 6 |
Which is not the essential component of a spectrometer. |
- A. Collimator
- B. Telescope
- C. Turntable
- D. Microscope
|
| 7 |
Multimode step index fibre is useful for |
- A. Long distances
- B. Short distances
- C. Better quality
- D. Low price
|
| 8 |
The magnifying power of an astronomical telescope is 10. If the focal length of objective is 100 cm, then what is the focal length of eye piece. |
- A. 10 cm
- B. 100 cm
- C. 1000 cm
- D. 5 cm
|
| 9 |
The magnification of a convex lens of focal length 5 cm is equal to. |
|
| 10 |
A convex lens can be used as |
- A. Simple microscope
- B. Compound microscope
- C. Telescope
- D. Spectrometer
|