The kinetic energy of an electron is E when the incident wavelength is λ To increase the KE of the electron to 2E, the incident wavelength must be. the incident wavelength must be The kinetic energy of an electron is E when the incident wavelength is λ To increase the KE of the electron to 2E June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 28 - Dual Nature of Radiation and Matter , Facebook Messenger WhatsApp Share this:TwitterFacebook Related