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} $
