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IIT JEE Advanced 2009 Paper 2

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Question : 11

Total: 57

Column I shows four situations of standard Young’s double slit arrangement with the screen placed far away from the slits S1 and S2. In each of these cases, S1P0 = S2P0 , S1P1−S2P1 = λ/4 and S1P2−S2P2 = λ/3, where l is the wavelength of the light used. In the cases B, C and D, a transparent sheet of refractive index μ and thickness t is pasted on slit S2. The thicknesses of the sheets are different in different cases. The phase difference between the light waves reaching a point P on the screen from the two slits is denoted by δ (P) and the intensity by I (P). Match each situation given in Column I with the statement(s) in Column II valid for that situation:

Column I	Column II
(A)	(P) δ(P0) = 0
(B)(µ - 1) t = λ/4	(Q) δ(P1) = 0
(C) (µ - 1) t = λ/2	(R) I(P1) = 0
(D) (µ - 1) t = 3λ/4	(S) I(P0) > I(P1)
	(T) I(P2) > I(P1)

(A)→(Q), (S); (B)→(P); (C)→(S); (D)→(P), (S), (T)
(A)→(P), (R); (B)→(Q); (C)→(T); (D)→(Q), (S), (T)
(A)→(Q), (S); (B)→(P); (C)→(T); (D)→(R), (S), (T)
(A)→(P), (S); (B)→(Q); (C)→(T); (D)→(R), (S), (T)

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