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 3 h and its radius h. When the beaker is filled with a liquid up to a height 2 h, he can see the lower end of the rod. Then the refractive index of the liquid is - VgyanHub

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 3 h and its radius h. When the beaker is filled with a liquid up to a height 2 h, he can see the lower end of the rod. Then the refractive index of the liquid is

Options :

(a) 5/2
(b) √(5/2)
(c) √(3/2)
(d) 3/2

Answer :

(b) √(5/2)

Answer Steps :

step 1

step 2

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