some real life examples for refraction of light
when a metal ball or coin kept inside the water, then it appears to be raised..
Refraction through a glass slab...
drawing ray diagram for the refraction of light through glass slab and finding angle of deviation.
USES OF REFRACTION IN COMMUNICATION & OPTICAL FIBRES
SNELL'S law
Intro to critical angle and total internal reflection by glass slab experiment
Critical angle and total internal reflection
Sparkling of diamond