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Statement of a problem № 4013

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Newton's rings may be formed in the reflective light by two curved surfaces as in Fig. 15.12a,b with the monochromatic light of wavelength L incident from the top. Show that the radius of the nth ring is given by the expression for the two situations: r^2n(1/R1+1/R2)=nL (dark rings) = (n + 2)L (bright rings) Minus sign in the bracket of left side for situation (a) and plus sign for situation (b).

Solution:
Newton's rings may be formed in the reflective light by two curved surfaces as i

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