Question

Which of the following statements is true regarding photoelectric effect?

• A. The kinetic energy of an ejected electron is independent of the intensity of a radiation.
• B. The number of photoelectrons ejected depends upon the intensity of the incident radiation.
• C. The kinetic energy of the emitted electrons depends upon the frequency of the incident radiation.
• D. All of these

Answer 1

The correct option is D All of these

We know that, $KE=hv-W$
The kinetic energy of an ejected electron is directly proportional to the frequency of the incident radiation and is independent of the intensity of the incident radiation. Whereas, the number of photoelectrons ejected is directly proportional to the intensity of the incident radiation and is independent of the frequency of the incident radiation.