You design an experiment in which a light of frequency f is incident upon a meta

Question

You design an experiment in which a light of frequency f is incident upon a metal with work function W0.   You can freely adjust the intensity and the frequency of the light, and you observe that when the light's frequency is above a "cutoff" value,  f0, electrons are emitted from the metal with a range of kinetic energies.  You measure that the maximum kinetic energy of these electrons is K.

Question 1: Which graph best shows K as a function of the frequency of incident light (at a fixed intensity)?

Question 2: Which graph best shows K as a function of the intensity of incident light (at a fixed frequency)?

PLEASE explain.

You design an experiment in which a light of frequency f is incident upon a metal with work function W0. You can freely adjust the intensity and the frequency of the light, and you observe that when the light's frequency is above a "cutoff" value, f0, electrons are emitted from the metal with a range of kinetic energies. You measure that the maximum kinetic energy of these electrons is K. Which graph best shows K as a function of the frequency of incident light (at a fixed intensity)? Which graph best shows K as a function of the intensity of incident light (at a fixed frequency)?

Explanation / Answer

1) A)

2) E)

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