Question

state characteristics of photoelectric effect

Answer 1

Three characteristic features of photoelectric effect which can be explained using Einstein’s Equation are as follows:-

(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

Characteristics

a) There is no time lag between the striking of light beam and the ejection of electrons from the metal.

b) The number of electrons ejected is proportional to the intensity or brightness of light.

c) The kinetic energy of the ejected electrons id directly porpotional to the frequency of the light used.