User:Inconspicuum/Physics (A Level)/Quantum Physics Questions

Light as a Quantum Phenomenon

 * 1) How much energy does a photon with a frequency of 50kHz carry?
 * 2) A photon carries 10-30J of energy. What is its frequency?
 * 3) How many photons of frequency 545 THz does a 20W bulb give out each second?
 * 4) In one minute, a bulb gives out a million photons of frequency 600 THz. What is the power of the bulb?
 * 5) The photons in a beam of electromagnetic radiation carry 2.5μJ of energy each. How long should the phasors representing this radiation take to rotate?

Electron Behaviour as a Quantum Phenomenon

 * 1) An electron moves at 30,000 ms-1. What is its de Broglie wavelength?
 * 2) What is its frequency?
 * 3) What is its kinetic energy, in eV?
 * 4) Given that it is travelling out of an electron gun, what was the potential difference between the anode and the cathode?
 * 5) An electron is accelerated by a potential difference of 150V. What is its frequency?