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Question about Modern Physics: Photoelectric Effect

Subject Physics

Physics

Source Originais Teachy

Originais Teachy

Topic Modern Physics: Photoelectric Effect

Modern Physics: Photoelectric Effect

Difficulty Hard

Hard

(Originais Teachy 2025) - Question Hard of Physics

A researcher is looking into the photoelectric effect using two monochromatic light sources with frequencies ν₁ and ν₂, where ν₂ > ν₁, shining on the same metallic material with a work function φ. When measuring the maximum kinetic energy of the emitted electrons, it’s noted that as the frequency of the light increases from ν₁ to ν₂, the maximum kinetic energy of the electrons also rises. Based on the theory of the photoelectric effect, how does the change in frequency affect the maximum kinetic energy of the emitted electrons?

By increasing the frequency of the light, the maximum kinetic energy of the emitted electrons also increases.

By increasing the frequency of the light, the number of emitted electrons increases.

By increasing the frequency of the light, the work function of the material decreases.

By increasing the frequency of the light, the maximum kinetic energy of the emitted electrons decreases.

By increasing the frequency of the light, the maximum kinetic energy of the emitted electrons remains constant.

Answer sheet:

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