Question

what is refraction?
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answer in 50 words​

Answer 1

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• Change in path of light ray as it passes from one medium to another medium is called Refraction of light.
• When light travels from a rarer medium to a denser one, it bends towards the normal ( i > r).
• When light travels from a denser medium to a rarer one, it bends aways from the normal (i < r).

Answer 2

• Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Even our eyes depend upon this bending of light.