Difference between incident ray and refracted ray

** incident ray.

Incident ray - the ray of light falling on the surface AB is called the incident ray

reflected ray.

** Reflected ray - the incident ray bouncing back in the same medium after striking the reflecting surface is called reflected ray.

low freq = 100 mhz

low wavelength =101.7m

length = 3x10^8/freq

they start with the same