PhysicsHard145×since 2002Q6590The de-Broglie wavelength of an electron is the same as that of a photon. If velocity of electron is 25%25 \%25% of the velocity of light, then the ratio of K.E. of electron and K.E. of photon will be:A14\frac{1}{4}41B81\frac{8}{1}18C18\frac{1}{8}81D11\frac{1}{1}11Check answerSkip