The longest wavelength that can be absorbed by silicon, which has the bandgap of $1.12 \; \mathrm{eV}$, is $1$. If the longest wavelength that can be absorbed by another material is $0.87 \; \mu \mathrm{m}$, then the bandgap of this material is
- $1.416 \; \mathrm{eV}$
- $0.886 \: \mathrm{eV}$
- $0.854 \: \mathrm{eV}$
- $0.706 \: \mathrm{eV}$