Target Exam

CUET

Subject

Physics

Chapter

Ray Optics

Question:

An equiconvex lens has a focal length of 20 cm and its radius of curvature is 30 cm. Its refractive index is

Options:

3/2

5/4

7/4

7/3

Correct Answer:

7/4

Explanation:

The correct answer is Option (3) → 7/4