A thin gollow equiconvex lens, silvered at the back, converges a parallel beam of
Channel: Doubtnut
Date: 2020-08-23

A thin gollow equiconvex lens, silvered at the back, converges a parallel beam of light at a distance of 0.2 m in front of it. Where will it converge the same light if filled with water having `mu=(4//3)`?