This video lecture from Physical Optics (F.Sc. first year physics) covers The Fringe width by using the concept of position of Fringes, and you will learn about bright and dark fringes .and also fringe width for both brightness and darkness. 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.