| 1 |
There are ......... types of reflection |
2
3
4
5
|
| 2 |
It takes about.......... minutes for light from the Sun to reach the Earth. |
6
7
8
9
|
| 3 |
When light falls on transparent object such as air, water, glass ,etc. It passes through them unchanged, it is called. |
Absorption
Reflection
Transmission
Diffusion
|
| 4 |
Angle of incidence is equal to he angle of reflection ,It is first law of. |
Refraction
Dispersion
Reflection
Diffraction
|
| 5 |
Speed of light is denoted by. |
l
s
d
c
|
| 6 |
Speed of light through glass is about. |
300000 km /s
250000 km/s
225000 km /s
200000 km/s
|
| 7 |
Speed of light through water is about. |
300000 km/s
250000 km/s
225000 km /s
200000 km/s
|
| 8 |
Speed of light through air is about. |
300000 km/s
250000 km/s
225000 km /s
200000 km /s
|
| 9 |
How is the angle of incidence related to the angle of reflection. |
It is greater
It is smaller
It is same
None of these
|
| 10 |
What happens when light hits a shiny or smooth surface. |
It is disappeared
It is refracted
It is absorbed
It is reflected
|
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