Question

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 the
refractive index of the liquid is-​

Answer 1

Answer:

the beaker height is 3h and its radius h. when the beaker is field with a liquid up to a height 2h he can see the lower end of the index