Physics Question from JEE Main 2023 · 6 April, Shift 2

A beam of light consisting of two wavelengths $7000 \, \text{\AA}$ and $5500 \, \text{\AA}$ is used to obtain interference pattern in Young's double slit experiment. The distance between the slits is $2.5 \, \text{mm}$ and the distance between the place of slits and the screen is $150 \, \text{cm}$. The least distance from the central fringe, where the bright fringes due to both the wavelengths coincide, is $n \times 10^{-5} \, \text{m}$. The value of $n$ is