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# Photoelectric effect: Find the constant C in units of eV-nm.

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Find the constant C in units of eV-nm.

3. a) ln the photoelectric effect, light of a given wavelength is incident on a metal
surface in a vacuum and, if the wavelengh is short enough.c a uses electrons to be
emitted. If W is the work function of the metal surface and T is the kinetic energy
of the electrons, then their relation to wavelength is given b1'
C/1,: T+W
Find the constant C in units of eV-nm.
b) If W : 4 .7 eY , what wavelength of light is required to barely eject an electron?
c) If W :4.7 eY andT : 1.5e V, what is the wavelength of the light?

4. Given the Debye temperatures for the following materials,
Material
Pb
Au
A1
Fe
Si
Diamond
Tp(K)
105
165
428
470
645
2230
Find the corresponding maximum frequencies for the waves in these materials according to the simple Debye model.

Nonzero Solutions to equation
0 : 1 - x / n - e - *
Xtnax
r59362426
2.82r43937
3.92069039
4.9651r423
5.98490123
6.993s7569
79973A907
8.99888808

#### Solution Summary

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