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CGP EDU Academic Team
Published on: August 14, 2026
A double convex lens has focal length 25 cm. The radius of curvature of one of the surfaces is double of the other. Find the radii if the refractive index of the material of the lens is 1.5.
Text Solution
Verified by ExpertsThe correct answer is:
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Given that,
Focal length, f = 25 cm
Refractive index, 
=1,5
Now,
Focal length oflens for given combination will be.
Hence radii are 18.75 cm, 37.5 cm
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