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प्रश्न
Answer the following.
Differentiate between luminous and non-Luminous objects.
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उत्तर
Luminous
The bodies which have the light of their own e.g. sun stars, bulb, candle, oil lamp, torch, a lantern.
Non-Luminous
The bodies-which do not have their own light. e.g. moon, chair, table. When light falls on them, they become visible.
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संबंधित प्रश्न
Write true or false of the following statement.
The moon is self-luminous.
Write true or false of the following statement.
We can see an object through an opaque medium.
Fill in the blank.
The sun is a ............... source of light.
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 |
Select the correct alternative.
The luminous body is
Name two natural sources of light.
Tick the correct answer.
A tube light is a
Fill in the blank
There are ........... and man-made ............ of light.
Fill in the blank
A ............. is formed when the path of light is obstructed by an ..............
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.
