In the photoelectric effect, what happens to the energy of the incident photon i

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Question: In the photoelectric effect, what happens to the energy of the incident photon if it exceeds the work function?

Options:

Correct Answer: Excess energy becomes kinetic energy

Solution:

The excess energy of the photon becomes the kinetic energy of the emitted photoelectrons.

In the photoelectric effect, what happens to the energy of the incident photon if it exceeds the work function?

In the photoelectric effect, what happens to the energy of the incident photon if it exceeds the work function?

Step 1: Understand that a photon is a particle of light that carries energy.
Step 2: Know that the work function is the minimum energy needed to remove an electron from a material.
Step 3: If the energy of the incoming photon is greater than the work function, it can free an electron.
Step 4: The energy of the photon is used to overcome the work function first.
Step 5: Any energy left over after overcoming the work function becomes the kinetic energy of the emitted electron.
Step 6: This means the faster the electron moves, the more excess energy it has.

Photoelectric Effect – The phenomenon where electrons are emitted from a material when it absorbs light (photons) of sufficient energy.
Work Function – The minimum energy required to remove an electron from the surface of a material.
Kinetic Energy of Photoelectrons – The energy that the emitted electrons possess, which is equal to the excess energy of the incident photon after overcoming the work function.