Question Detail
Question
What happens to the kinetic energy (KE) of ejected electrons if the frequency of incident light is increased above the threshold frequency, assuming constant intensity?
Correct Answer
Option C is the correct answer.
Detailed Explanation
From hf = W + KE, if W is constant and hf increases (due to higher frequency f), then KE must also increase to maintain the equality. More photon energy means more energy left over for kinetic energy after overcoming the work function.
Hint
Use Einstein's photoelectric equation and consider which terms are constant and which vary.