A parallel beam of light emerges from the opposite surface when a point source of light lies at the surface of the sphere. The refractive index of the sphere is A parallel beam of light emerges from the opposite surface when a point source of light lies at the surface of the sphere. The refractive index of the sphere is September 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related