With the help of proper diagram and necessary expression, explain how Newton`s ring experiment is useful to determine the radius of curvature of a plano-convex lens.

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written 7.7 years ago by

vermavarsha432 • 1000

modified 4.1 years ago by

sanketshingote • 100

advanced engineering physics

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written 7.7 years ago by

vermavarsha432 • 1000

Given :

$D_5 = 0.336 cm$

$D_15 = 0.590 cm$

$λ = 5890 A^o = 5.89 × 10^{-5} cm$

To find: R

Solution:

$R = \frac{D_{15}^2 - D_5^2}{4λ (15 - 5)} = 99.83cm$

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written 6.3 years ago by

vermavarsha432 • 1000

A planoconvex lens of large radius of curvature is placed on a plane glass plate so that a thin film of air is trapped between the spherical surface of the lens and a glass plate. This thin air film is illuminated by a monochromatic source of light. The light from …

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