A particular green LED emits light of wavelength 5490, Å, the energy bandgap of the semiconductor material used there is .. h = 6.6 x 10-34 J sec.

• 2.26 eV
• 1.98 eV
• 1.17 eV
• 0.74 eV

Correct Answer: 2.26 eV

Explanation:

From Plank equation joule

to convert it into electron volt it will be divided by 1.6 x 10^-19.