Photoelectric EffectHard
Question
In a photoelectric experiment, the frequency and intensity of a light source are both doubled. Then consider the following statements.
(i) The saturation photocurrent remains almost the same.
(ii) The maximum kinetic energy of the photoelectrons is doubled.
(i) The saturation photocurrent remains almost the same.
(ii) The maximum kinetic energy of the photoelectrons is doubled.
Options
A.Both (i) and (ii) are true
B.(i) is true but (ii) is false
C.(i) is false but (ii) is true
D.both (i) and (ii) are false
Solution
Since frequency of light solurce is double, the energy carried by each photon will be doubled.
Hence intensity will be doubled even if number of photons remains constant. Hence saturation current is constant. Since frequency is doubled, maximum KE increases but it is not doubled.
Hence intensity will be doubled even if number of photons remains constant. Hence saturation current is constant. Since frequency is doubled, maximum KE increases but it is not doubled.
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
Graph is plotted between maximum kinetic energy of electron with frequency of incident photon in Photo electric effect. ...In X-ray tube, which is the characteristic of X-ray...What determines the hardness of the X-rays obtained from the Coolidge tube :-...An a-particle is bombarded on 14N. As a result, a 17O nucleus is formed and a particle is emitted. This particle is a...The radiation force experienced by body exposed to radiation of intensity I, assuming surface of body to be perfectly ab...