| 1 |
Speed of light through air is about. |
- A. 300000 km/s
- B. 250000 km/s
- C. 225000 km /s
- D. 200000 km /s
|
| 2 |
Speed of light is denoted by. |
|
| 3 |
-------------------- is/are used to coat the backside of the mirror. |
- A. Silver
- B. Copper
- C. Aluminium
- D. Silver and Aluminium
|
| 4 |
In a convex mirror, focus is. |
- A. Under the mirror
- B. In front of the mirror
- C. On the mirror
- D. Behind the mirror
|
| 5 |
Speed of light through glass is about. |
- A. 300000 km /s
- B. 250000 km/s
- C. 225000 km /s
- D. 200000 km/s
|
| 6 |
Which of the following type of mirror can form an image larger than the object. |
- A. Plane
- B. Convex
- C. Concave
- D. All of these
|
| 7 |
The image formed by a convex mirror is. |
- A. Real and upright
- B. Real and inverted
- C. Virtual and upright
- D. Virtual and inverted
|
| 8 |
How is the angle of incidence related to the angle of reflection. |
- A. It is greater
- B. It is smaller
- C. It is same
- D. None of these
|
| 9 |
There are ......... types of reflection |
|
| 10 |
Speed of light through water is about. |
- A. 300000 km/s
- B. 250000 km/s
- C. 225000 km /s
- D. 200000 km/s
|
