In a Newton ring experiment the diameter of a eight dark ring is 0.72cm. If the the radius of curvature of plano-convex lense is 300cm. Calculate wave length of light
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Expert's answer
2018-10-03T06:53:09-0400
For the dark ring system: (d_n^2)/4R=nλ The wave length of light is λ=(d_n^2)/4nR=(0.72)^2/4(8)(300) =0.000054 cm=540 nm.
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