The de-Broglie wavelength of a photon is twice the de-Broglie wavelength of an electron. The speed of the electron is ve=c/100. Then. The de-Broglie wavelength of a photon is twice the de-Broglie wavelength of an electron. The speed of the electron is ve=c/100. Then. June 9, 2021 Category: Chapter 11 - Dual Nature of Radiation and Matter , NCERT Exemplar Class 12 , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related