JEE Main 20257 Apr, Morning shiftPhysicsEasyOptics190× since 2002
A lens having refractive index 1.6 has focal length of 12 cm, when it is in air. Find the focal length of the lens when it is placed in water. (Take refractive index of water as 1.28)
JEE Main 2025 · 7 Apr, Morning shift · Q26