For the photoelectric effect, the maximum kinetic energy ( E _ k )...

For the photoelectric effect, the maximum kinetic energy $\left({E}_{k}\right)$ of the photoelectrons is plotted against the frequency $( v )$ of the incident photons as shown in figure. The slope of the graph gives

Options

ARatio of Planck’s constant to electric charge
BWork function of the metal
CCharge of electron
DPlanck’s constant

Correct answer

D. Planck’s constant

Step-by-step solution

Comparing Einstein's equation ${K}_\max = hv - h{v}_{0},$ with $y = mx + c,$ we get slope, $m = h$ , which is Planck’s constant.

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