A parallel beam of monochromatic light of wavelength = 100(A) is incident on the slits separated by distance d = 2mm. There is a screen at a distance D = 1m from slit. If R.I. of the medium between slits and screen is varying with time as = 20 4t until it becomes 1. A glass slab of R.I. u 5 and thickness 0.2 mm is placed infront of one of the slit S as shown in figure. In figure y represent position of central maxima on the screen from its geometrical centre. List - I with List - II and select the correct answer Match using the codes given below the lists: (P) (Q) (R) (S) S S List-I At t = 0, value of ly] in (cm) At t = 5s value of lyl (in cm) Speed of central maxima when it is at geometrical centre of screen (in cm/s) Fringe width at time t = 3.75 sec (m) u=20-4t MMM D (1) (2) (3) 40 7.5 1 8 List - II