Consider the two following statements $A$ and $B$, and identify the correct choice given in the answers :…
Consider the two following statements $A$ and $B$, and identify the correct choice given in the answers :
(A) In photovoltaic cells the photoelectric current produced is not proportional to the intensity of incident light.
(B) In gas filled photoemissive cells, the velocity of photoelectrons depends on the wavelength of the incident radiation.
both $A$ and $B$ are true
both $A$ and $B$ are false
$A$ is true but $B$ is false
$A$ is false but $\mathrm{B}$ is true
Solution
In photovoltaic cells the photoelectric current produced is proportional to the intensity of incident light, so statement $A$ is false.
The velocity of photoelectrons depends on the maximum kinetic energy of photoelectrons, which depends on the frequency and hence on the wavelength of incident radiation, so statement $B$ is true.