In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is 2.4 μ m. If the experiment is carried out…

In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is $\displaystyle 2.4 \mu \mathrm{~m}$. If the experiment is carried out in another medium having refractive index $\displaystyle 1.2$ , the fringe width will be $\displaystyle \_\_\_\_$ $\displaystyle \mu \mathrm{m}$.