Question: What would be the ideal value of the work function of material used to make a sensor of visible light? Pick the best answer for

What would be the ideal value of the work function of material used to make a sensor of visible light? Pick the best answer for a sensor that would detect all of the visible spectrum.

A workfunction lower than the energy of

750

nm photons

A work function lower than the energy of

500

nm photons

A work function lower than the energy of

400

nm photons

A work function lower than the energy of

200

nm photons

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