Q 1277278186.     The Young's double slit experiment is performed 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` mm and refractive index `1.5`. The interference pattern is observed on a screen placed 1.5 m from the slits.

(All wavelengths in the problem are for the medium of refractive index `4/3`. Ignore dispersion)

Find the light intensity of point `O` (center of screen) relative to the maximum fringe intensity.