At the stopping potential, the photoelectrons have

Options

Akinetic energy $= 0$
Bpotential energy $= 0$
Ckinetic energy greater than potential energy
DKinetic energy is maximum

Correct answer

A. kinetic energy $= 0$

Step-by-step solution

The stopping potential is the minimum retarding potential applied to the anode that stops even the most energetic photoelectrons from reaching it.

At this potential, the work done against the electric field equals the maximum kinetic energy of the emitted photoelectrons.

Therefore, the kinetic energy of the photoelectrons becomes zero just as they reach the plate.

Answer: kinetic energy

= 0

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