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
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 curve drawn between velocity and frequency of photon in vacuum will be a :-...A free neutron decays to a proton but a free proton does not decay to a neutron. This is because...A spherical drop of water has 1mm radius. If the surface tension of water is 70 × 10-3N/m then the difference of pr...The wavelength λ of de Broglie waves associated with an electron (mass m, charge e) accelerated through a potential...