It is observed in an experiment on photoelectric effect that an increase in the intensity of the incident radiation does not change the maximum kinetic energy of the electrons where does the extra energy of the incident radiation go is it lost state your answer with explanatory reasoning
Answers
Answer:
The maximum kinetic energy of a photoelectron depends on the frequency of the incident radiation and the threshold frequency for the metal. It has nothing to do with the intensity of the incident radiation. The increase in intensity results in an increase in the number of electrons emitted per second.
The increase in intensity results in an increase in the number of electrons emitted per second
Explanation:-
When electromagnetic radiation with a frequency greater than the threshold frequency is incident on a metal surface, there is an emission of electrons. It is observed that not every incident photon is effective in liberating an electron. In fact, the number of electrons emitted per second is far less than the number of photons incident per second. The photons that are not effective in the liberation of electrons are reflected (or scattered) or absorbed resulting in rising in the temperature of the metal surface. The maximum kinetic energy of a photoelectron depends on the frequency of the incident radiation and the threshold frequency for the metal. It has nothing to do with the intensity of the incident radiation. The increase in intensity results in an increase in the number of electrons emitted per second.