Question

what is the definition for refraction​

Answer 1

Answer:

In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.

Explanation:

For refraction of light you can use the general formula which also includes snell's law:

$\frac{sin i}{sin r} = \frac{n2}{n1} =\frac{v1}{v2}$ = λ1/λ2

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Answer 2

Answer: refraction is the change in direction of light when travelling from one medium to another.

Some of its examples are-

Prism and rainbow formation