Question:
What is the focal length of a plano-convex lens if 'R' is the radius of curvature and ‘n’ is the refractive index?
What is the focal length of a plano-convex lens if 'R' is the radius of curvature and ‘n’ is the refractive index?
Updated On: Jun 1, 2024
- \(f=R\)
- \(f=\frac R2\)
- \(f=\frac {R}{n-1}\)
- \(f=\frac {n-1}{R}\)
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The Correct Option is C
Solution and Explanation
The correct option is (C): \(f=\frac {R}{n-1}\).
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