Column-I shows four modifications of a standard YDSE setup. Match each modification with all applicable characteristics in Column-II.

List 1

1. (A) Point source in focal plane illuminating the slits through a lens

   

2. (B) Equal-thickness slabs with μ₁>μ₂ before S₁ and S₂

   

3. (C) Parallel beam through a right-angled isosceles prism (n=1.50)

   

4. (D) Parallel beam through a thin prism

   

5. .

List 2

1. (P) Zero-order maximum lies above O

2. (Q) A mica sheet before S₂ can restore central bright at O

3. (R) Fringe width β=λD/d

4. (S) Point O can be a minimum

5. (T) Point O can be the least-order minimum