| 1 |
Totally reflecting prism is used in: |
- A. periscope
- B. binoculars
- C. periscope and binocular
- D. telescope
|
| 2 |
The angle of which prism deviates the incident ray is called: |
- A. angle of incident
- B. angle of reflection
- C. angle of deviation
- D. angle of minimum deviation
|
| 3 |
The mirror whose outer surface is reflecting is called: |
- A. Concave mirror
- B. Convex mirror
- C. Lens
- D. Mirror
|
| 4 |
In totally reflecting prism one angle is of 90<sup>o</sup>, and other two angles are of: |
- A. 30<sup>o</sup>,30<sup>o</sup>
- B. 45<sup>o</sup>,90<sup>o</sup>
- C. 45<sup>o</sup>,45<sup>o</sup>
- D. 40<sup>o</sup>,40<sup>o</sup>
|
| 5 |
Which types of image is formed by a concave lens on a screen? |
- A. Inverted and real
- B. Inverted and virtual
- C. upright and real
- D. Upright and virtual
|
| 6 |
The line which passes through pole of the mirror and center of curvature is called principal: |
- A. axis
- B. Focus
- C. Line
- D. None of these
|
| 7 |
Spherical mirrors are used in: |
- A. Medical
- B. Search light
- C. Microscope
- D. All of these
|
| 8 |
<p class="MsoNormal">Astronauts in space need to communicate with each other by
radio links because:<o:p></o:p></p> |
- A. <p class="MsoNormal">Sound waves travel very slowly in space<o:p></o:p></p>
- B. <p class="MsoNormal">Sound waves travel very fast in space<o:p></o:p></p>
- C. <p class="MsoNormal">Sound waves cannot travel in space<o:p></o:p></p>
- D. <p class="MsoNormal">Sound waves have low frequency in space<o:p></o:p></p>
|
| 9 |
To see from submarine the ship at the surface of water , we use: |
- A. Telescope
- B. Microscope
- C. Peri scope
- D. Prism
|
| 10 |
The distance of spherical mirror is called: |
- A. Curvature
- B. Aperture
- C. Sphere
- D. a,b
|