Geometrical OpticsHard
Question
A beam of monochromatic light is incident at i = 50o on one face of an equilateral the angle of emergence is 40o, then the angle of minimum deviation is :
Options
A.30o
B.< 30o
C.≤ 30o
D.≥ 30o
Solution
i = 50o, equilateral prism A = 60o ; e = 40o
Total angle pd deviation
δ = i + e - A = 50 + 40 - 60 ; δ = 30o
Hence δmin < δ ⇒ δmin < 30o
Total angle pd deviation
δ = i + e - A = 50 + 40 - 60 ; δ = 30o
Hence δmin < δ ⇒ δmin < 30o
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
A person can see clearly only upto a distance of 25 cm. He wants to read a book placed at a distance of 50 cm. What kind...A fish looking up through the water can see the whole outside world contained in a circular horizon. If the refractive i...A fish rising vertically up towards the surface of water with speed 3 ms-1 observes a bird diving vertically down toward...Optical fibre are based on -...A converging lens of focal length f1 is placed in front of and coaxial with a convex with a convex mirror of focal lengt...