In YDSE, let A and B be two slits. Films of thickness `t_(A)` and `t_(B)` and refractive `mu_(A)` and `mu_(B)` are placed in front of A and B, respectively. If `mu_(A) t_(A) = mu_(A) t_(B)`, then the central maxima will

Options

A. Not shift
B. Shift towards `S_(2)` irrespective of amounts of `t_(1)` and `t_(2)`
C. Shift towards `S_(2)` irrespective of amounts of `t_(1)` and `t_(2)`
D. Shift towards `S_(1)` if `t_(2)gt t_(1)` and towards `S_(2)` if `t_(2)lt t_(1)`

Answer

D

Explanation

Shift `= (mu -1) (tbeta)/(lambda)`