An electron moving with speed v and a photon moving with speed c , have the same D-Broglie wavelength. The ratio of the kinetic energy of the electron to that of a photon is:

Question

TestHub · Accepted Answer

λ e = λ Ph h p e = h p ph 2 m k e = E ph c 2 m k e = E ph 2 c 2 k e E ph = E ph c 2 1 2 m = p ph c 1 2 m = p e c 1 2 m = m v c 1 2 m = v 2 c

Physics - Modern Physics Question with Solution | TestHub

Options:

Doubts & Discussion