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प्रश्न
Fill in the blank
There are ........... and man-made ............ of light.
रिक्त स्थान भरें
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उत्तर
There are natural and man-made sources of light.
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संबंधित प्रश्न
Write true or false of the following statement.
We can see an object through an opaque medium.
What is light? Define it.
Name any four man made sources of light.
A ______ is a natural source of 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 |
Sunlight is a blend of______ colors
In going from a rarer to denser medium, the ray of light bends ______.
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.
Why are traffic signals red in colour?
List any five properties of light.
