For what distance is ray optics a good approximation when the aperture is 4 mm and the wavelength of light is 400 nm? For what distance is ray optics a good approximation when the aperture is 4 mm and the wavelength of light is 400 nm? November 11, 2020 Category: Chapter 10 - Wave Optics , MTG NEET Physics , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related