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Question: If diameter of these overlapping rings is 0.5 cm, find radius of curvature of the plano-convex lens.
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Subject: Applied Physics 2

Topic: Interference And Diffraction

Difficulty: Medium

### In the Newton’s ring experiment, with source emitting $\lambda s$ 7000 & 6000 $\mathring{A}$, the $n^{th}$ dark ring of 7000 $\mathring{A}$ coincides with $(n+1)^{th}$ dark ring of 6000 $\mathring{A}$. If diameter of these overlapping rings is 0.5 cm, find radius of curvature of the plano-convex lens.

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