Geometrical OpticsHard
Question
An observer can se through a pin-hole the top end of a thin rod of height h, placed as shown in the figure. The beaker height 3h andits radius h. When the beaker is filled with a liquid up to a height 2h, he can seecthe lower end of the rod. Then the refrective index of the liquid is
Options
A.
B.
C.
D.
Solution
PQ = QR = 2h ∴ ∠i = 45o
∴ ST = RT = h = KM = MN
So, KS =
= (h√5)
∴ sin r =
∴
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
If the refractive index of a material of equilateral prism is √3, then angle of minimum deviation of the prism is ...A thin prism P1 with angle 4o and made from glass of refrective index 1.54 is combined with another this prism P2 made f...A telescope has an objective lens of focal length 150 cm and an eyepiece of focal length 5 cm. If a 50 m talltower at a ...A convex lens is to be used at the fixed object distance of 1 inch. If it is to produce an erect image magnified 5 times...Least distance of distinct vision is 25 cm, What will be Magnifying power of simple microscope of focal length 5 cm, if ...