In a 
-type semiconductor the donor level is at 50 
above the valence band. To produce one electron, the maximum wavelength of light photon required is (Planck's constant, 
and speed of light in vacuum, 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
-type semiconductor donor energy level,
According to the Planck's quantum theory,
So, the maximum wavelength of light photon required is 
.
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