The figure shows a modified Young\'s double slit experimental set-up. Here `SS_(2)-SS1=lamda//4
Channel: Doubtnut
Date: 2020-01-03

The figure shows a modified Young\'s double slit experimental set-up. Here `SS_(2)-SS1=lamda//4.` (a) Write the condition for constructive interference. (b) Obtain an expression for the fringe width.