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प्रश्न
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
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
Select the correct alternative.
The natural source of light is
Select the correct alternative.
The luminous body is
Name two natural sources of light.
Is the moon a luminous object?
From among the following objects, list out the opaque, translucent, and transparent bodies in the space provided below:
A glass strip, an ordinary paper, greased paper, tracing paper, polythene sheet, wooden piece, steel plate, glycerine, kerosene oil, mustard oil, grounded glass, stone, book, water, and milk.
Opaque Transparent Translucent
Fill in the blank
Speed of light in vacuum is .................
Answer the following.
Distinguish between transparent, translucent, and opaque objects.
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.
Describe the pictures.
State whether the following statement is True or False
An object can be seen only if it emits light.
