Question

Column-I contains four situations of a incident ray. Column-II contains property of reflected or refracted ray coming out of the system for any angle of incidence. Case of TIR has to be taken only where there is refraction

	Column-I		Column-II
(A)		(P)	The ray may go through total internal reflection.
(B)		(Q)	The ray cannot go through total internal reflection.
(C)		(R)	Angle of deviation is\(~180^\circ\)
(D)		(S)	Angle of deviation can be\(~90^\circ\)
		(T)	Angle of deviation can be \(~0^\circ\)

air
air Base opaque

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

For (A) : TIR cannot take place
For (B) : Reflected ray becomes parallel if two plane mirrors are at ${90}^{\circ }$.
For (C) : At both the places, TIR occurs.
For (D) : ${\theta }_c={45}^{\circ }$ and $A={60}^{\circ }$then TIR can take place