Answer to Question #118057 in Optics for Priya Mehra

Question

What types of air film is obtained if we insert a thin paper between two plane parallel glass plates? What is the shape of interference obtained?On what factors does the fringe with depend?

Answer 1

The air film is obtained between the two plane parallel glass plates is called the newton's ring experiment. In the newton's ring experiment when the plane surfaces of two lenses are placed together. Each successive ring of a given color indicates an increase of only one wavelength in the distance between the lens and the blank, so that great precision can be obtained. Once the lens is perfect, there will be no rings.