AP EAMCET · PHYSICS · Ray Optics
The focal length of an equi-convex lens is greater than the radius of curvature of any of the surfaces. Then the refractive index of the material of the lens is
- A greater than zero but less than 1.5
- B greater than 1.5 but less than 2.0
- C greater than 2.0 but less than 2.5
- D greater than 2.5 but less than 2.0
Answer & Solution
Correct Answer
(A) greater than zero but less than 1.5
Step-by-step Solution
Detailed explanation
Focal length of lens, \(\frac{1}{f}=(\mu-1)\left(\frac{1}{R_1}-\frac{1}{R_2}\right)\) For equi-convex lens,…
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