A particular green LED emits light of wavelength 5490, , the energy b – McqOptions

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1.	A particular green LED emits light of wavelength 5490, , 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

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