Question

Write the mathematical form of Snell's law of refraction? If a ray of light enters from glass into water, will it bend towards or away from the normal​

Answer 1

Answer:

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

If a ray of lights enters from glass into water, then it will bend away from normal.

Explaination:

According to the Snell's law , the ratio of sine of angle of incidence ( i ) to the sine of angle of refraction ( r ) is constant, for given pair of light of a given colour and given pair of media.

i .e.

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

If a ray of lights enters from glass into water, then it will bend away from normal as it is entering from the denser medium to the rarer medium.