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Created for Albert.io. Copyright 2017. All right reserved.

In a photoelectric experiment, light of different frequencies shines on a certain metal, and the maximum KE of emitted electrons is recorded. A graph of the data is shown, including a best-fit line.

Which of the following physical quantities is represented by the slope of the best-fit line?

A

Planck's constant.

B

Work function of the surface.

C

Cutoff frequency of the surface.

D

Energy of incident photons.

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