Question

Consider a single photon with a wavelength of lambda, a frequency of v, and an energy of E. What is the wavelength, frequency, and energy of a pulse of light containing 100 of these photons? A) 0.01lanbda, 0.01v, and 0.01E B) 0.01lanbda, v, and 100E C) lambda, v, and 100E D) 100lambda, 100v, and E E) 100lambda, 100v, and 100E

Answer 1

It's going to be c) lambda, v, and 100E because with the equation E = hv you get the energy per one photon. So if you multiply 100 photons to the energy you still use the same wavelength and frequency.