ECAT & MDCAT XI PHYSICS : Chapter 9 PHYSICAL OPTICS (test 1) Leave a Comment / By Afshan JAMAL / July 4, 2026 Welcome to your ECAT & MDCAT XI PHYSICS : Chapter 9 PHYSICAL OPTICS (test 1) While carrying out Young's Double Slit Experiment for interference of light with two slits, maxima occur at angles for which sin θ = mλ/d Here, d is: Distance of the slits from the screen Distance between dark and bright fringes Distance between the slits Width of the mth fringe None None Previous Start Quiz Next Time's up