試題詳解

11. Choose the correct statements about photoelectric effect and properties of photons:
(A) The Maxwell equation can perfectly explain the photoelectric effect.
(B) The photoelectric effect shows that light comes in quantized chunks of energy.
(C) The wavelength of a beam of light is increased but the intensity of light remains unchanged. In this situation, there are more incident photons per second but each photon has less energy.
(D) The work function of metal can be measured by using the photoelectric effect.
(E) If a piece of metal has a work function of 2.755 eV, photoelectrons can be emitted when it is illuminated with light with a wavelength of 500 nm.