Two transparent media of refractive indices and have a solid lens shaped transparent material of refractive index between them as shown in figures in Column II. A ray traversing these media is also shown in the figures. In Column I different relationsh

Question

Two transparent media of refractive indices $μ_{1}$ and $μ_{3}$ have a solid lens shaped transparent material of refractive index $μ_{2}$ between them as shown in figures in Column II. A ray traversing these media is also shown in the figures. In Column I different relationships between $μ_{1}$ , $μ_{2}$ and $μ_{3}$ are given. Match them to the ray diagrams shown in Column II. [2010]

	Column I		Column II
(A)	$μ_{1} < μ_{2}$	(p)
(B)	$μ_{1} > μ_{2}$	(q)
(C)	$μ_{2} = μ_{3}$	(r)
(D)	$μ_{2} > μ_{3}$	(s)
		(t)

	Column I		Column II
(A)	$μ_{1} < μ_{2}$	(p)
(B)	$μ_{1} > μ_{2}$	(q)
(C)	$μ_{2} = μ_{3}$	(r)
(D)	$μ_{2} > μ_{3}$	(s)
		(t)

Smart Achievers · Accepted Answer

(4)

When a ray of light enters from a rarer medium to a denser medium, it bends towards the normal, and the opposite happens when the ray of light travels from a denser medium to a rarer medium; it bends away from the normal.

(a) As $μ_{3}$ , the ray of light entering the lens will bend towards the normal.

(b) As $μ_{1} > μ_{2}$ , the ray of light entering the lens will bend away from the normal.

(c) As $μ_{2} = μ_{3}$ , the ray of light comes out from the lens without any deviation.

(d) As $μ_{2} > μ_{3}$ , the ray of light coming out of the lens deviates away from the normal.

Solution

1 A-p, r, t; B-q, s; C-q, s, t; D-p, r

2 A-q, s; B-p, r, t; C-q, s, t; D-p, r

3 A-q, s; B-q, s, t; C-p, r, t; D-p, r

4 A-p, r; B-q, s, t; C-p, r, t; D-q, s

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