If `hat(i)` denotes a unit vector along incident light ray, `hat (r)`a unit vector along refracted
Channel: Doubtnut
Date: 2020-01-19

If `hat(i)` denotes a unit vector along incident light ray, `hat (r)`a unit vector along refracted ray into a medium of refraction index `mu` and `hat (n)` unit vector normal to boundary of medium directed towards incident medium, then law of refraction is