find the focal length of Plano convex lens if its radius of curvature is R and refractive index is n
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Explanation:
This is a basic equation used to calculate the focal length of a lens
given the radius of curvature of the lens and the refractive index of
the lens relative to the medium. It is only an approximation and works
best for thin lenses.
1/f = (n-1)(1/R1 - 1/R2) where n is the refractive index of the lens
For a plano-convex lens R2 is flat. Therefore, 1/R2 is 1/infinity or zero.
The formula then becomes:
1/f = (n-1)(1/R1)
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Explanation:
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