Question

In an interference pattern produced by two identical slits, the intensity at the site of the central maximum is I.
The intensity at the same spot when either of the two slits is closed is $I_0$. We must have

• A. $I_{=}{I}_0$
  
• B. $I_{=}2I_0$
  
• C. $I_{=}4I_0$
  
• D. $Iand{I}_0$ are not related

Answer 1

The correct option is C $I_{=}4I_0$


At central fringe $[I=4I_0]$