Question

The energy gap of silicon is $1 .1 4 \,eV$. The maximum wavelength at which silicon starts energy absorption, will be $(h = 6.62 \times 10^{-34}\, J\, s$; $c = 3 \times 10^8\, ms^{ -1})$

• A. $10.888 ,??
• B. $108.88 ,??
• C. $1088.8 ,??
• D. $10888 ,??

Answer 1

Answer: (D)

$10888 ,??

Answer 2

$\lambda=\frac{hc}{E}=\frac{6.62\times10^{-34}\times3\times10^{8}}{1.14\times1.6\times10^{-19}}$ $=10,888,??