Q8. The focal length of a convex lens with a refractive index of 1.5 is 2 cm. The focal length of the lens, when immersed in a liquid of refractive index 1.25, will be: Physics — Optics, Nature of Light and Optical Instruments — Question 8 of 155A. 5 cm B. 7.5 cm C. 10 cm D. 2.5 cm Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →