| 1 |
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
|
| 2 |
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
|
| 3 |
Multimode graded index fibre has a core whose diameter range lie from. |
- A. 5 to 50 micro meter
- B. 50 to 100 micro meter
- C. 40 to 1000 micro meter
- D. 50 to 10,000 micrometer
|
| 4 |
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
|
| 5 |
Multimode step index fibre is useful for |
- A. Long distances
- B. Short distances
- C. Better quality
- D. Low price
|
| 6 |
More details of an object can be seen with a microscope by using |
- A. Green light
- B. Red light
- C. Yellow light
- D. Blue light
|
| 7 |
The least distance of distinct vision for the normal eye is. |
- A. 15 cm
- B. 25 cm
- C. 125 cm
- D. 25 m
|
| 8 |
A double convex lens acts as diverging lens when the object is |
- A. At infinity
- B. Inside the focus
- C. A way from focus
- D. A a large distance from lens
|
| 9 |
The types of optical fibres are |
- A. Three
- B. Four
- C. Five
- D. Six
|
| 10 |
__ will travel faster than other through an optical fibre. |
- A. Ultraviolet light
- B. Visible light
- C. Infrared light
- D. White light
|
