Question

What will happen to Newton's rings, if the plano-convex lens is lifted slightly from the point of contact?

Answer 1

Explanation:

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Answer 2

Answer:

In Newton’s ring experiment, a plano-concave air film is formed between the glass slide and the convex lens. The formation of concentric circular fringes can be seen by interference. Irrespective of the nature of the lens ( whether plano or biconvex) for the same of radius of curvature, there will be no difference in the nature of the fringes. There may be a slight variation only in the intensity.