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प्रश्न
Fill in the blank.
The sun is a ............... source of light.
रिक्त स्थान भरें
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उत्तर
The sun is a natural source of light.
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संबंधित प्रश्न
Can light travel in vacuum?
Select the correct alternative.
The natural source of light is
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
Name any four man made sources of light.
Write true or false
The earth has its own light.
Write whether of the following objects are luminous or non-luminous.
| Object | Luminous/Non-luminous |
| A book | |
| A burning candle | |
| A wax cloth | |
| A pencil | |
| A pen | |
| A light bulb | |
| A tyre | |
| A torch |
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
Mirrors change the direction of light that fall on them.
a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is:
- at C
- between C and F
- between F and P of the mirror.
b) Mention the position and nature of image in each case.
What happens to light when it gets dispersed? Give an example.
