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(D) The stopping potential $(V_0)$ is determined by the maximum kinetic energy of the emitted photoelectrons, which is given by Einstein's photoelectr

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remains unchanged

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(D) The stopping potential $(V_0)$ is determined by the maximum kinetic energy of the emitted photoelectrons, which is given by Einstein's photoelectric equation: $K_{max} = h
u - \Phi = eV_0$. Here, $h$ is Planck's constant, $
u$ is the frequency of incident radiation, $\Phi$ is the work function of the surface, and $e$ is the charge of an electron. Since the stopping potential depends only on the frequency of the incident radiation and the nature of the material (work function), it is independent of the intensity of the incident radiation. Therefore, increasing the intensity of the incident radiation does not change the stopping potential.

On a photosensitive surface, if the intensity of incident radiation is increased, the stopping potential

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