Jee Main
Geometrical Optics
JEE Main 2024 (Online) 29th January Morning Shift
MCQ+4 / -12024
A biconvex lens of refractive index 1.5 has a focal length of \(20 \mathrm{~cm}\) in air. Its focal length when immersed in a liquid of refractive index 1.6 will be: