Figure shows a set-up perform Young’s double slit experiment. A monochromatic source of light is placed at S. $S_{1}$ and $S_{2}$ act as coherent sources and interference pattern is obtained on the screen. Match Column-I with Column-II keeping in mind the young’s double slit experiment.
Column-I Column-II
A S is removed and two real sources of
different wavelengths are placed at $S_{1}$ and $S_{2}$ . p Interference fringes disappear.
B Width of $S_{1}$ is two times the width of $S_{2}$ . q There is uniform illumination on a large part of the screen.
C $S_{1}$ is closed. r The zero order fringe will not form at O
D A thin transparent plate is placed in front of $S_{1}$ . Assuming negligible absorption by the plate. s Intensity of a dark fringe will be non-zero, but less than the intensity of bright fringe.

Question

Infinity Learn · Accepted Answer

$A - (q, r) B - (s) C - (p) D - (p, q)$

Detailed Solution

	Column-I		Column-II
A	S is removed and two real sources of different wavelengths are placed at $S_{1}$ and $S_{2}$ .	p	Interference fringes disappear.
B	Width of $S_{1}$ is two times the width of $S_{2}$ .	q	There is uniform illumination on a large part of the screen.
C	$S_{1}$ is closed.	r	The zero order fringe will not form at O
D	A thin transparent plate is placed in front of $S_{1}$ . Assuming negligible absorption by the plate.	s	Intensity of a dark fringe will be non-zero, but less than the intensity of bright fringe.