Which of the following statements about the photoelectric effect is incorrect?
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
Which of the following statements about the photoelectric effect is incorrect?
(1) When a metal plate is illuminated with radiation, photoelectrons are emitted with no time delay.
(2) The intensity of incident radiation has no effect on the maximum kinetic energy of emitted photoelectrons
(3) Below a certain frequency of illuminating radiation, no photoelectrons are emitted.
(4) The maximum kinetic energy of emitted photoelectrons is proportional to the frequency of the illuminating radiation.