In a Fraunhofer diffraction at single slit of width d with incident light of wavelength 5500 A0, the first minimum is observed at angle 30 degree. The first secondary maximum is observed at an angle θ = In a Fraunhofer diffraction at single slit of width d with incident light of wavelength 5500 A0 the first minimum is observed at angle 30 degree. The first secondary maximum is observed at an angle θ = October 28, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 28 - Electromagnetic Waves , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related