Q87. The de Broglie wavelength of an electron moving at a velocity of 1.5 × 108 m/s is equal to the wavelength of a photon. What is the ratio of the kinetic energy of the electron to the energy of the photon? (Speed of light, c = 3 × 108 m/s)Physics — NUST Mock By IBAGRADS 5 — Question 87 of 200A. 2B. 4C. 1/2D. ¼Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →