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IIT JEE 2009 Physics Paper2 Code 1 Solutions

MATRIX MATCH TYPE

10.    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 m and thickness t is pasted on slit S2. The thickness 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)

 

diffraction

 

(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)

Sol.   (A ->p, s); (B -> q); (C -> t); (D -> r, s, t)

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