Choose the correct statement(s) regarding the photo-electric effect.

Options

A. No electrons are ejected, regardless of the intensity of the radiation, unless the frequency exceeds a thershold value characteristic of the metal
B. The kinetic energy of the ejected electrons varies linearly with the frequency of the incident radiation and its intensity
C. Even at low intensities, electrons and ejected immediately if the frequency is above the threshold value
D. An intense and a weak beam of monochromatic radiations differ in having number of photons and not in the energy of photons

Answer

A, C, D

Explanation

Photo electric effect concept