Conditions for minimum and maximum in interference in Weddge shaped Film

In this short video, concept conditions for minimum and maximum in thin film of non-uniform thickness i.e. wedge shaped film are obtained.
Sound credits : Chaitanya Chaudhari

[@manthanballa4453]

The best explaination ❤❤

[@praveenpanchariya9823]

Awesome lec👌

[@EngineeringPhysicsbySanjiv]

Thank you 🙏 and best luck👍

[@doublecross8323]

why path difference is taken as +- lambda/2 but not only +lambda/2