A photoelectric surface is illuminated successively by monochromatic light of wavelength…
Chemistry · NEET · NTA Exams — Structure of Atom
A photoelectric surface is illuminated successively by monochromatic light of wavelength \(\lambda \text { and } \frac{\lambda}{2}\). 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 = Plank's constant, c = speed of light)
- \(\frac{h c}{3 \lambda}\)
- \(\frac{\mathrm{hc}}{\mathrm{Z} \mathrm{\lambda}}\)
- \(\frac{\text { hc }}{\lambda}\)
- \(\frac{\text { Zhc }}{\lambda}\)
Answer
(B) hc Z
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