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प्रश्न
Answer the following.
What is light?
उत्तर
Light is a form of Energy i.e. The external physical cause that affects our eye to produce the sensation of vision.
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संबंधित प्रश्न
How do we see objects around us ?
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
Why do objects in a room become visible even if sunlight does not enter it?
Name a few living things which emit light.
Tick the correct answer.
Light causes
Tick the correct answer.
Light is a font of
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.
The angle of deviation of light ray in a prism depends on the angle of ______.
Why are traffic signals red in colour?
