Question

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: (a).2.26 eV

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Q. 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.

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