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.

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.

Answer: Option A

Explanation:

From Plank equation 76-400-1 joule

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