🏆 AP Exam Prep

When light of a specific frequency shines on a metal surface, electrons are emitted. If the intensity of the light is increased but its frequency remains the same, what happens to the maximum kinetic energy and the number of emitted electrons per second?

A Max KE increases, number of electrons increases.
B Max KE remains the same, number of electrons increases.
C Max KE increases, number of electrons remains the same.
D Max KE remains the same, number of electrons remains the same.

✓ Correct Answer: Option B

Maximum kinetic energy depends on light frequency and work function, not intensity. Increasing light intensity increases the number of photons, thus increasing the number of emitted electrons per second.

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