rt p1 19

Two coherent point sources of light having wavelength λ are seperated by a distance d. A circle is drawn in space surrounding both the point sources as shown. The plane of circle contains both the point sources. The distance d between both the sources is given in column-I and the total number of corresponding points of maximum intensity and minimum intensity on the periphery of the shown circle are given in column-II. Match each situation of column-I with the results in column-II.

(A) d = 99.4 ï€ Î»
(P) 398 points of maximum intensity
(B) d = 99.6 ï€ Î»
(Q) 400 points of maximum intensity
(C) d = 100 ï€ Î»
(R) 396 points of minimum intensity
(D) d = 100.4 λ
(S) 400 points of minimum intensity

(T) Number of points of minimum intensity is

less than the number of points of maximum intensity

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