An electron moving with speed v and a photon moving with speed c, have same D-Broglie wavelength. The ratio of kinetic energy of electron to that of photon is:
(1) \(\cfrac{3c}{\text v}\)
(2) \(\cfrac{\text v}{3c}\)
(3) \(\cfrac{\text v}{2c}\)
(4) \(\cfrac{2c}{\text v}\)
