Focal Length Ratio in Different Media (Jee Mains) | ExamDuo
Lenses and Prisms
Medium
Focal Length Ratio in Different Media
A thin lens made of glass (refractive index = 1.5) of focal length f=16 cm is immersed in a liquid of refractive index 1.42. If its focal length in liquid is f1, then the ratio f1∕f is closest to the integer :