The Young's double slit interference experiment is performed using light consisting of \( 480 \, \text{nm} \) and \( 600 \, \text{nm} \) wavelengths to form interference patterns. The least number of the bright fringes of \( 480 \, \text{nm} \) light that are required for the first coincidence with the bright fringes formed by \( 600 \, \text{nm} \) light is:
