A photoelectric surface is illuminated successively by monochromatic light of…
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
A photoelectric surface is illuminated successively by monochromatic light of wavelengths λ and 2λ. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, what is the work function of the surface?
(1) 2λhc
(2) λhc
(3) 3λhc
(4) λ3hc