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प्रश्न
What do we call a substance through which we cannot see light? Give an example of such a substance.
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उत्तर
A substance through which we cannot see light is called an opaque medium.
Examples: Wood, metals, and black paper, etc.
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संबंधित प्रश्न
Can light travel in vacuum?
Write true or false of the following statement.
We can see an object through an opaque medium.
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
Select the correct alternative.
The natural source of light is
How does light make an object visible?
What do we call a body that shines on its own?
Tick the correct answer.
Substance which don’t allow light to pass through them,
Answer the following.
What is 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 |
Boojho made light from a laser torch fall on a prism. Will he be able to observe a band of seven colours? Explain with a reason.
