Which of the following statements about photoelectric effect

Last updated: 6/9/2023

Which of the following statements about photoelectric effect is are correct I When electron emission occurs the rate of emission of photoelectrons proportional to the intensity of is electromagnetic radiation incident on the metal II Electrons are emitted only when the incident electromagnetic radiation has a wavelength larger than some threshold value III Electrons are emitted only when the incident electromagnetic radition has an intensity greater than some threshold value A I only B II only C I and III only