Question: For Newton's ring, prove that diameters of nth dark ring is directly proportional to the square root of natural number.
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In Newton's ring experiment the diameter of n th  and (n+8) bright rings are 4.2mm and 7mm respectively. Radius of curvature of lower surface of lens is 2m. Determine the wavelength of light used.

Mumbai University > First year > Sem 2 > Applied Physics 2

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