Question:medium
The longest wavelength that can be absorbed by silicon, which has the bandgap of \(1.12\) eV, is \(1.1\,\mu m\). If the longest wavelength that can be absorbed by another material is \(0.78\,\mu m\), then the bandgap of this material is :
The longest wavelength that can be absorbed by silicon, which has the bandgap of \(1.12\) eV, is \(1.1\,\mu m\). If the longest wavelength that can be absorbed by another material is \(0.78\,\mu m\), then the bandgap of this material is :
Show Hint
Bandgap and wavelength relation:
\[
E_g(\text{eV})=\frac{1.24}{\lambda(\mu m)}
\]
Higher bandgap means lower wavelength absorption limit.
Updated On: May 22, 2026
- \(1.416\) eV
- \(0.886\) eV
- \(1.59\) eV
- \(3.5\) eV
Show Solution
The Correct Option is C
Solution and Explanation
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