Question

The magnitude of forbidden energy gap is -

• A. $0.5\text{eV}$
• B. $2.0\text{eV}$
• C. $1.5\text{eV}$
• D. $2.5\text{eV}$

Answer 1

The correct option is C $1.5\text{eV}$


The magnitude of the forbidden energy gap is given by -

$FEG=(C.B{)}_{min}-(V.B{)}_{max}$

$\Rightarrow FEG=2.0-0.5=1.5\text{eV}$

Hence, option $\left(C\right)$ is the correct answer.