| 1 |
Reapters are placed in new system at distance of. |
- A. 30 km
- B. 50 km
- C. 80 km
- D. 100 km
|
| 2 |
For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively. |
- A. 10 cm
- B. 20 cm
- C. 5 cm
- D. 120 cm
|
| 3 |
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
|
| 4 |
If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has. |
- A. Short size
- B. Long focal length
- C. Large size
- D. Short focal length
|
| 5 |
The magnifying power of a convex lens of focal lendth 10 cm is |
|
| 6 |
The minimum distance from eye at which an object appears to be distinct is |
- A. Near point
- B. Focal length
- C. Image distance from lens
- D. Object distance from lens
|
| 7 |
In Michelson's experiment the relation used to find the speed of light is |
- A. 16 fc
- B. 1/16 fd
- C. 16 fd
- D. 16/fd
|
| 8 |
the final image obtained by astronomical telescope is. |
- A. Erect
- B. Virtual
- C. Magnified
- D. All of these
|
| 9 |
A convex lens can be used as |
- A. Simple microscope
- B. Compound microscope
- C. Telescope
- D. Spectrometer
|
| 10 |
The least distance of distinct vision for the normal eye is. |
- A. 15 cm
- B. 25 cm
- C. 125 cm
- D. 25 m
|