0 A bulb is placed at a depth of 2 7 m inside water and a

Last updated: 6/24/2023

0 A bulb is placed at a depth of 2 7 m inside water and a floating opaque disc is placed over the bulb so that the bulb is not visible from the surface The minimum diameter of the disc is Refractive index of water is 4 3 1 6m 3 12m 2 9m 4 14m