Class 12 NEET Physics Dual Nature of Matter and Radiation

A photoelectric surface is illuminated successively by monochromatic light of wavelength λ and

λ

2

.If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material is
(h = Planck’s constant, c = speed of light)