Published by:
CGP EDU Academic Team
Published on: September 12, 2026
The radii of curvature for a thin convex lens are 10 cm and 15 cm respectively. The focal length of the lens is 12 cm. The refractive index of the lens material is
Text Solution
Verified by ExpertsThe correct answer is:
C
To determine the refractive index 
of a thin convex lens, we use the lens maker's formula:
Given:
Focal length 
Radii of curvature ( 
and 
) = 10 cm and -15 cm, respectively
Substituting these values into the formula, we have:
Simplifying the equation:
Solving for 
:
Thus, the refractive index of the lens material is 
.
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