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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
How do we see objects around us ?
Can light travel in vacuum?
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.
What do we call a body that shines on its own?
_______ is the natural source that stimulates sight and makes things visible.
When a beam of white light passes through a prism it gets ______.
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?
A ray of the light incident along normal to the mirror ______ its path.
