Question Detail
Question
What is the threshold frequency in the photoelectric effect?
Correct Answer
Option B is the correct answer.
Detailed Explanation
For each metal, there is a characteristic minimum frequency—the threshold frequency below which the photoelectric effect does not occur. The electron cannot escape from the metal surface if the photons have less energy than this energy threshold, even if the light beam is intense.
Hint
The notes define this as the minimum frequency for the effect to occur.