Question

In the photoelectric effect, the light you are using causes electrons to be emitted from a...

In the photoelectric effect, the light you are using causes electrons to be emitted from a metal surface. Classify the following as true or false, regarding adjustments to the light.

1.If you increase the intensity of the light, you will increase the kinetic energies of the emitted electrons.

2.If you increase the frequency of the light, you will increase the kinetic energies of the emitted electrons.

3. If you increase the intensity of the light, you will increase the number of electrons emitted per second.

4.If you decrease the frequency of the light sufficiently, the electrons will stop being emitted.

5. If you increase the intensity of the light, you will decrease the number of photons hitting the metal surface per second.

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Answer #1

1. If you increase the intensity of the light, you will increase the kinetic energies of the emitted electrons. - False.

2. If you increase the frequency of the light, you will increase the kinetic energies of the emitted electrons. - True.

3. If you increase the intensity of the light, you will increase the number of electrons emitted per second. - True.

4. If you decrease the frequency of the light sufficiently, the electrons will stop being emitted. - True.

5. If you increase the intensity of the light, you will decrease the number of photons hitting the metal surface per second. - False.

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