Q. Consider the two following statements I and II, and identify the correct choice given in the answers In photovoltaic cells the photoelectric current produced is not proportional to the intensity of incident light. In gas filled photoemissive cells, the velocity of photoelectrons depends on the wavelength of the incident radiation.
A) Both I and II are true
B) Both I and II are false
C) I is true but II is false
D) I is false but II is true
Explanation
(d) In photovoltaic cells photoelectric current produced is proportional to the intensity of incident light, so statement $A$ is false.
The velocity of photoelectrons depends upon the maximum kinetic energy of photoelectrons, which depends on the frequency and hence on the wavelength of incident radiation, so statement $B$ is true.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.