Question

Write three characteristic features in photoelectric effect which cannot be explaind on tge bases of wave theory of light but can be explaind only using einstein's equation

Answer 1

(i) For a given metal and frequency of incident radiation, the number of photoelectrons ejected per second is directly proportional to the intensity of incident radiation.
(ii) Maximum kinetic energy of the emitted photo electron is independent of the intensity of incident radiations.
(iii) Emission of photoelectrons is instantaneous

Answer 2

Hey !!

The three characteristic features which can't be explained by wave theory are:

1. Kinetic energy of emitted electrons are found to be independent of intensity of incident light.

2. Below a certain frequency (threshold) there is no photo-emission.

3. Spontaneous emission of photo-electrons.

GOOD LUCK!!