Monochromatic light of frequency above the threshold frequency produces a saturation…
PHYSICS · Subjective · A Level · Physics · Particles and radiation · Particles and radiation
Problem
Monochromatic light of frequency above the threshold frequency produces a saturation current of 4.0 µA on a potassium surface when the intensity is 2.5 mW cm⁻². Keeping the frequency unchanged, calculate the saturation current when the intensity is reduced to 1.0 mW cm⁻².