Q141 / 150 · JEE Main 2006 · Physics

If the lattice constant of this semiconductor is decreased, then which of the following is correct?

A
All $E_c, E_g, E_v$ decrease
B
All F $F_{-F}$ increase
C
$\mathrm{E}_{\mathrm{c}}$, and $\mathrm{E}_{\mathrm{v}}$ increase but $\mathrm{E}_{\mathrm{g}}$ decreases
Correct answer
D
$E_c$, and $E_v$, decrease $E_g$ increases

Solution

$=(8 \times 7.06-7 \times 5.60) \mathrm{MeV}=17.28 \mathrm{MeV}$

Hence, the correct answer is option: 'D'.

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