Semiconducting Devices Question 192

Question: The energy gap of silicon is 1.14 eV. The maximum wavelength at which silicon will begin absorbing energy is

[MP PMT 1993]

Options:

A) 10888 Å

B) 1088.8 Å

C) 108.88 Å

D) 10.888 Å

Show Answer

Answer:

Correct Answer: A

Solution:

$ {\lambda _{\max }}=\frac{hc}{E}=\frac{6.6\times {{10}^{-34}}\times 3\times 10^{8}}{1.14\times 1.6\times {{10}^{-19}}}=10888{\AA} $



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