If one of the slit of a standard Young's double slit experiment is covered by a thin parallel sided glass slab so that it transmits only one-half the light intensity of the other, then

Options

A. The fringe pattern will get shifted towards the covered slit
B. The fringe pattern will get shifted away from the covered slit
C. The bright fringe will becomes more bright and the dark ones will becomes less bright
D. The fringe width will be change

Answer

A

Explanation

`I_(max)=(sqrt(I_(1))+sqrt(I_(2)))^(2)=(sqrt(I_(1))+sqrt(I/2))^(2) lt 4I rArr I_("min")=(sqrt(I_(1))-sqrt(I/2)))^(2) gt 0`