Question Detail
Question
The threshold frequency in a photoelectric experiment is most closely related to the
Correct Answer
Option D is the correct answer.
Detailed Explanation
The threshold frequency (f_threshold) is the minimum frequency of incident light required to cause the emission of electrons from a metal surface. This frequency is directly related to the work function (φ) of the material by the equation φ = hf_threshold, where h is Planck's constant.The brightness or intensity of the incident light determines the number of electrons emitted, but not their kinetic energy or whether they are emitted at all below the threshold frequency. The thickness of the metal is generally not directly related to the threshold frequency.
Hint
Recall the fundamental condition for the photoelectric effect to occur and how it relates to the material's properties.