Some result nt correct Question $2$: Answer$/$solve the following questions, show your steps clearly

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$($I$)$ A nondegenerate semiconductor has a probability of finding an electron at the con to $0\mathrm{.}4.$ Find the following at and $\frac{m_m}{m_0}=1\mathrm{.}18)$: $-$ ars$$

a$.$ Effective density of states in CB$.$

b$.$ The total electron concentration in the CB$.$

c$.$ The density of states in the conduction band, $g_c(E),$ at an energy $20$ meV abov

d$.$ If a photon with energy of $1\mathrm{.}12$ eV can generate an electron$-$hole pair $($EHP$).$

Find the wavelength $()$ of the photon.

What is the maximum $E_g?$ please solve correct