F.Sc. Physics Book1, CH 9, LEC 4: Proved Formula of Path Difference

This video lecture from Physical Optics (F.Sc. first year physics) covers how Interference takes place, formula for path difference and its derivation. It also explains the concept of constructive and destructive interference. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.