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Class 12 Physics Chapter 9 - Ray Optics and Optical Instruments MCQ and Assertion Questions | CBSE Short Quiz

Question 1 of 5

CBSE Past Year 2026

Assertion (A) : When a convex lens made of glass is immersed in water, its converging power increases.

Reason (R) : The focal length of a lens depends only on the radii of curvature of its two faces.

A Both Assertion and Reason are true, and Reason is the correct explanation of Assertion. B Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion. C Assertion is true, but Reason is false. D Both Assertion and Reason are false.