An observer can see through a pin hole the top end of a thin

Last updated: 6/25/2023

An observer can see through a pin hole the top end of a thin rod of height h placed as shown in the figure The beaker height is 3h and its radius h When the beaker is filled with a liquid up to a height 2h he can see the lower end of the rod Then if the refractive index of the liquid is n 2 find n 3h h