1 |
Which things are transparent objects. |
Water
Glass
Air
All of these
|
2 |
The object through which light can pass completely. |
Translucent
Opaque
Semi and opaque object
Transparent
|
3 |
Non -illuminated object that are illuminated by heating are called. |
Transparent object
Opaque object
Burning object
Semi transparent
|
4 |
Moon is |
Luminous object
Ligh emitting object
Non-luminous object
Opaque object
|
5 |
Which of the following object in luminous. |
Book
Candle
Bulb
Sun
|
6 |
The light reflected from the moon resches to earth. |
2.5 sec
3.5 sec
1.5 sec
0.5 sec
|
7 |
The light from the sun reaches on the earth |
5 min
8 min
10 min
15 min
|
8 |
Which thing is not bright. |
Book
Candle
Bulb
Sun
|
9 |
What one of the followig object emit its light. |
Wood
Brick
Sun
Soil
|
10 |
Speed oflight travels is one second. |
200,000 km
300,000 km
400,000 km
500,000 km
|