| 1 |
__ will travel faster than other through an optical fibre. |
- A. Ultraviolet light
- B. Visible light
- C. Infrared light
- D. White light
|
| 2 |
The device used to study the spectra from different sources of light is |
- A. Telescope
- B. Optical fibre
- C. Spectrometer
- D. Microscope
|
| 3 |
The units of magnifying power of microscope or telescope are. |
- A. Metre
- B. m<sup>-1</sup>
- C. dioptre
- D. No unit
|
| 4 |
Multimode step index fiber is useful for. |
- A. Long distance
- B. Sort distance
- C. Very long distance
- D. Infinite distance
|
| 5 |
If the object is at 5 cm from the lens of simple microscope than its magnifying power will be. |
|
| 6 |
Information carrying capacity of optical fibre called. |
- A. Capacity
- B. Band width
- C. Immunity
- D. Ability
|
| 7 |
The location of near point changes with |
- A. Age
- B. Size of the eye
- C. Sharpness of the eye
- D. None of these
|
| 8 |
Critical angle is that angle of incident ofr which angle of refraction is. |
- A. 90 <sup>o</sup>
- B. 45 <sup>o</sup>
- C. 42 <sup>o</sup>
- D. 24 <sup>o</sup>
|
| 9 |
The first person who attempted to measure the speed of light was. |
- A. Michelson
- B. Hygen's
- C. Galileo
- D. Ability
|
| 10 |
In an object is placed in between focus point and Opticla center of a convex lens, the image formed by lens is. |
- A. Real inverted
- B. Virtual diminshed
- C. Virtual inverted
- D. Virtual erected
|
