Question

two laws of refraction​

Answer 1

The light ray bends towards normal when travelled from rarer medium to denser medium

The light ray goes away from the normal when travelled from denser medium to rarer medium

Answer 2

$\Large{\underline{\underline{\mathfrak{AnSwEr :}}}}$

The two laws of the refraction were given below :

(1). The incident ray, the refracted ray and the normal at the point of incidence, all lie in the same plane.

(2). Snell's law : The ratio of the sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media.

$\small{\underline{\boxed{\bf{Constant = \dfrac{Sine \: of \: angle \: of \: incidence}{Sine \: of \: angle \: of \: refraction}}}}}$

The constant is called refractive index.

$\large{\underline{\boxed{\bf{Constant = \dfrac{Sin \: i}{Sin \: r}}}}}$