Question

what is refraction?​

Answer 1

Answer:

Refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium ..

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Answer 2

${\huge{\bold{\underline{\mathfrak{\orange{Refraction}}}}}}$

✯The change in light when it passes from one medium to another medium obliquely , is called Refraction.

✯Cause - It is due to the change in speed of light when it comes from rarer to denser medium or denser to rarer medium.

✯Laws of Refraction:-•The incident Ray, refracted Ray and normal all lie on a same plane .

•The ratio of sin of angle of incidence and sin of angle of Refraction is constant for a given pair of media .

$\large\sf\frac{sin \: i}{sin \: r} = constant$