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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
Fill in the blank
A medium through which light cannot pass is called the ....................
Answer the following.
List two transparent objects.
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 |
Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.
In going from a rarer to denser medium, the ray of light bends ______.
The angle of deviation of light ray in a prism depends on the angle of ______.
The path of the light is called as ______.
List any five properties of light.
A student observes a tree given in the following figure through a pin hole camera. Which of the diagrams given in the following figure (a) to (d), depicts the image seen by her correctly?
Look at the figure given in the following figure.
Will there be any difference in the shadow formed on the screen in A and B.
