| 1 |
The pole of spherical mirror is also called. |
- A. Principal axis
- B. Focus
- C. Vertex
- D. Focal leangth
|
| 2 |
Speed of light through water is about. |
- A. 300000 km/s
- B. 250000 km/s
- C. 225000 km /s
- D. 200000 km/s
|
| 3 |
It takes about.......... minutes for light from the Sun to reach the Earth. |
|
| 4 |
There are ......... types of reflection |
|
| 5 |
When light falls on transparent object such as air, water, glass ,etc. It passes through them unchanged, it is called. |
- A. Absorption
- B. Reflection
- C. Transmission
- D. Diffusion
|
| 6 |
Speed of light is denoted by. |
|
| 7 |
Angle of incidence is equal to he angle of reflection ,It is first law of. |
- A. Refraction
- B. Dispersion
- C. Reflection
- D. Diffraction
|
| 8 |
What happens when light hits a shiny or smooth surface. |
- A. It is disappeared
- B. It is refracted
- C. It is absorbed
- D. It is reflected
|
| 9 |
Through which of the following the light travels the fastest. |
- A. Prism
- B. Water
- C. Air
- D. Vacuum
|
| 10 |
Which type of image is formed in Plane Mirror. |
- A. Real
- B. Real and virtual
- C. Virtual
- D. None of these
|
