Question

40 CITI
23. 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
(1) 5/2
(2) 15/2
3h
T
h
t
2h -
(3) 3/2
(4) 3/2​

Answer 1

Answer:

option3

Explanation:

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