Question

what is snell's law?

Answer 1

Snell's Law states that when light passes from medium 1 to medium 2 having angle of incidence angle i and angle of refraction angle r then ratio sin i/ sin r is constant.


Where i is the angle of incidence and r is the angle of refraction. This constant value is called the refractive index of the second medium with respect to the first.

Snell’s law has a wide range of applications in the physics especially in the branch of optics. It is used in optical apparatus such as eyeglasses, contact lenses, cameras, rainbows. There is an instrument called a refractometer that uses Snell’s law to calculate the refractive index of liquids. It is used all the time in the candy-making industry.

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Answer 2

Snell's Law :-

$\bf{`}$ When a light ray passes from one medium to another, then, the ratio of $\bf{sine\: of\: angle\: of\: incidence}$ to that of $\bf{sine\: of\: angle \:of \:refraction}$ is $\underline{constant}$.$\bf{'}$