TS EAMCET 4 May 2018 Shift 1 Solved Paper

Interference fringes are obtained in a Young double slit experiment using beam of light consisting two wavelengths 500 nm and 600 nm. Bright fringes due to both wavelengths coincide at 2.5 mm from the central maximum. If the separation between the slitsis 3 mm. then the distance between the screen and plane of the slits is