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A particular green $\text{LED}$ emits light of wavelength $5490 \text{ A}$. The energy bandgap of the semiconductor material used there is (Planck's constant = $6.626 \times 10^{-34} \mathrm{~J-s})$

  1. $2.26 \; \mathrm{eV}$
  2. $1.98  \; \mathrm{eV}$
  3. $1.17 \; \mathrm{eV}$
  4. $0.74  \; \mathrm{eV}$
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