In an experiment on the photoelectric effect, a beam of monochromatic light is aimed at a...

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Physics

In an experiment on the photoelectric effect, a beam ofmonochromatic light is aimed at a nickel-plated cathode. Ascientist uses mathematical formulas to calculate the maximum speedof the electrons that the cathode releases. Which constant mostlimits the precision of the calculation?

the charge of one electron

the mass of an electron

the work function of nickel

Planck’s constant

Which example illustrates a behavior called“photoconductivity”?

A metallic film conducts electricity when an electric potentialis applied across it.

A cathode emits electrons when it is struck by white light,which is a mixture of light of many frequencies.

A film with metallic properties becomes a better electricalconductor when light is shined upon it.

A cathode emits electrons when monochromatic light of a certainfrequency strikes it.

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