The electrical conductivity of semicondutor increases when electromagnetic radiation of wavelength shorter than 29800 Å is incident on it. The band gap for the semiconductor is

Options

A. 0.83 eV
B. 0.64 eV
C. 0.42 eV
D. 0.36 eV

Explanation

To find the band gap energy (E_g) of the semiconductor given that its electrical conductivity increases when electromagnetic radiation of wavelength shorter than 29800 Å is incident on it, we can follow these steps:

### Step-by-Step Solution:

1. **Convert Wavelength to Meters**:
The given wavelength is 29800 Å. We need to convert this to meters.
\[
1 \, \text{Å} = 10^{-10} \, \text{m}
...