Question

According to wave theory, the ejection of electrons from the metal surface should depend on -

• A. wavelength of incident radiation.
• B. frequency of incident radiation.
• C. intensity of incident radiation.
• D. None of these

Answer 1

The correct option is C intensity of incident radiation.

According to wave theory, the photoelectric effect should occur for any frequency of the radiation, provided that the radiation is intense enough to eject the photoelectrons.

Therefore, ejection of the electrons should not depend upon frequency/wavelength. Instead, it should depend upon the intensity of the radiation.

Hence, option $\left(C\right)$ is the correct answer.