JEE PHYSICS MCQ: RAY OPTICS

1 Medium

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Application +4 | -1

The radii of curvature of a double convex lens are

10 \mathrm{~cm}

and

20 \mathrm{~cm}

respectively. Calculate its focal length when it is immersed in a liquid of refractive index 1.65. State the nature of the lens in the liquid. The refractive index of glass is 1.5 .

View answer and explanation

Correct option: C

f =-73.33 \mathrm{~cm}

Option C (f = -73.33 cm) is correct because it is the calculated focal length of the lens when immersed in the liquid, indicating a diverging nature.

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