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प्रश्न
What do we call an electric bulb producing light?
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उत्तर
Artificial source 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.
Match the following columns
| Column A | Column B |
| a. Wooden block | i. new moon's day |
| b. Sun | ii. rectilinear propagation of light |
| c. Umbra | iii. opaque body |
| d. Eclipse | iv. luminous body |
| e. Solar eclipse | v. complete dark park |
How does light make an object visible?
Is the moon a luminous object?
Name a few living things which emit light.
Write true or false
Opaque objects do not allow light to pass through them.
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 |
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Light is a form of energy and it travels in a straight line.
