Two sine waves of slightly different frequencies f1 and f2 (f1 > f2) with zero phase difference, same amplitudes, travelling in the same direction superimpose. same amplitudes travelling in the same direction superimpose. Two sine waves of slightly different frequencies f1 and f2 (f1 > f2) with zero phase difference November 6, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related