JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Application +4 | -1

A thin lens made of glass (refractive index = 1.5) of focal length

f = 16\,\mathrm{cm}

in immersed in a liquid of refractive index 1.42. If its focal length in liquid is

{f_1}

, then the ratio

{f_1}/f

is closest to the integer

View answer and explanation

Correct option: C

Option C (9) is correct because the ratio of focal lengths in liquid and air is calculated using the lens maker's formula and refractive indices, resulting in a value closest to 9.

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