| 1 |
Which is not the essential component of a spectrometer. |
- A. Collimator
- B. Telescope
- C. Turntable
- D. Microscope
|
| 2 |
Critical angle is that incident angle in denser medium for which angle of refraction is. |
- A. 0 <sup>o</sup>
- B. 45 <sup>o</sup>
- C. 90 <sup>o</sup>
- D. 120 <sup>o</sup>
|
| 3 |
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
|
| 4 |
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
|
| 5 |
The location of near point changes with |
- A. Age
- B. Size of the eye
- C. Sharpness of the eye
- D. None of these
|
| 6 |
The speed of light was measured correctly by |
- A. Galileo
- B. Michelson
- C. Newton
- D. Maxwell
|
| 7 |
The optical fiber is covered for protection by a |
- A. Glass Jacket
- B. Plastic Jacket
- C. Copper Jacket
- D. Aluminum Jacket
|
| 8 |
The magnification of a convex lens of focal length 5 cm is equal to. |
|
| 9 |
Image formed by a concave lens is |
- A. Real
- B. Virtual
- C. Erect
- D. None of these
|
| 10 |
The final image seen through ey piece in telescope is. |
- A. Real, enlarge and inverted
- B. Vertual, enlarge and erect
- C. Virtual, enlarge and inverted
- D. In Real, enlarge and erect
|
