The energy gap of silicon is 1.14 eV. The ma | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The energy of a photon required to excite an electron across the energy gap $E_g$ is given by $E_g = \frac{hc}{\lambda}$.Given $E_g = 1.14 \ eV$.U

Vedclass · Accepted Answer

$10888 \ \mathring{A}$

Vedclass · Answer

(A) The energy of a photon required to excite an electron across the energy gap $E_g$ is given by $E_g = \frac{hc}{\lambda}$.Given $E_g = 1.14 \ eV$.Using the relation $\lambda = \frac{12400 \ \mathring{A} \cdot eV}{E_g \ (eV)}$,we get:$\lambda = \frac{12400}{1.14} \ \mathring{A}$.$\lambda \approx 10877.19 \ \mathring{A}$.Rounding to the nearest provided option,the value is $10888 \ \mathring{A}$.

The energy gap of silicon is $1.14 \ eV$. The maximum wavelength at which silicon will begin absorbing energy is

Similar Questions

In semiconductors at room temperature,

Consider the following statements regarding a semiconductor:
$(A)$ There are no free electrons at $0 \ K$.
$(B)$ There are no free electrons at any temperature.
$(C)$ The number of free electrons increases with temperature.
$(D)$ The number of free electrons is less than that in a conductor.

When a semiconductor is heated,its resistance

Choose the correct statement. In conductors,

For non-conductors (insulators),the energy gap is: (in $, eV$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module