Laser beams are used to measure long distances because (1) they are monochromatic (2) they are highly polarised (3) they are coherent Laser beams are used to measure long distances because (1) they are monochromatic (2) they are highly polarised (3) they are coherent October 22, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related