The young's double slit experiment is done in a medium of refractive index `4/3`. A light of 600 nm wavelength is falling on the slits having 0.45 mm separation. The lower slit `S_(2)` is covered by a thin glass sheet of thickness `10.4 mu m` and refractive index 1.5. The interference pattern is observed on a screen placed. 1.5 m from the slit as shown in figure. Find the light intensity at point O relative to the maximum fringe intensity

Answer

3