In YDSE, the source is placed symmetrical to the slits. If a transparent slab is placed in front of the upper slit, then (slab can absorb a fraction of light) In YDSE the source is placed symmetrical to the slits. If a transparent slab is placed in front of the upper slit then (slab can absorb a fraction of light) October 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related