What happens to the photoelectric effect if the metal surface is cooled?

What happens to the photoelectric effect if the metal surface is cooled?

Step 1: Understand the photoelectric effect. This is when light hits a metal surface and causes electrons to be ejected from that surface.
Step 2: Know that electrons in the metal have energy. This energy helps them escape from the metal when light hits it.
Step 3: Recognize that thermal energy is the energy that comes from heat. When a metal is warm, its electrons have more thermal energy.
Step 4: When the metal surface is cooled, the thermal energy of the electrons decreases.
Step 5: With less thermal energy, the electrons find it harder to overcome the work function, which is the minimum energy needed to escape the metal.
Step 6: As a result, fewer electrons will be ejected from the metal surface when it is cooled.

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