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A plano-convex lens has index of refraction n. The curved side of the lens has radius of curvature R and rests on a flat glass surface of the same index of refraction, with a film of index nflim between them, as shown in Figure P36.42. The lens is illuminated from above by light of wavelength λ. Show that the dark Newton’s rings have radii given approximately by
where r << R and m is an integer.
Figure P36.42
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Physics for Scientists and Engineers with Modern Physics
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