| 1 |
The refractive index of air is: |
6
7
2
1,0003
|
| 2 |
Sun light consist of ____________ colour |
6
7
5
2
|
| 3 |
To see stomach problems we use: |
Gastroscope
Bronchoscope
Cystoscope
All of these
|
| 4 |
Optical fibre are: |
Cheap
Flexible
Lighter
All of these
|
| 5 |
The refractive index of internal coating of optical fibre is: |
1.56
1.51
1.53
1.58
|
| 6 |
Totally reflecting prism turns the incident ray at an angle of: |
90<sup>o</sup>
60<sup>o</sup>
75<sup>o</sup>
45<sup>o</sup>
|
| 7 |
Totally reflecting prism is used in: |
periscope
binoculars
periscope and binocular
telescope
|
| 8 |
In totally reflecting prism one angle is of 90o, and other two angles are of: |
30<sup>o</sup>,30<sup>o</sup>
45<sup>o</sup>,90<sup>o</sup>
45<sup>o</sup>,45<sup>o</sup>
40<sup>o</sup>,40<sup>o</sup>
|
| 9 |
The totally reflectiing prism one angle is of: |
45<sup>o</sup>
90<sup>o</sup>
180<sup>o</sup>
120<sup>o</sup>
|
| 10 |
To see from submarine the ship at the surface of water , we use: |
Telescope
Microscope
Peri scope
Prism
|
| 11 |
The angle of which prism deviates the incident ray is called: |
angle of incident
angle of reflection
angle of deviation
angle of minimum deviation
|
| 12 |
The minimum value of angle of deviation is called: |
Minimum angle
incident angle
angle of minimum deviation
None of these
|
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