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

1.	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.	2.26 eV
B.	1.98 eV
C.	1.17 eV
D.	0.74 eV
Answer» B. 1.98 eV