Question

58. Calculate the wavelength of radiation emitted by an LED made up of a semiconducting material wit
band gap energy 2.8eV.
(A) 2.8 Å
(B) 4.3308 Å
(C) 5548.4 Å
(D) 4430.8 Å​

Answer 1

Answer:

(D) 4430.8 Å

Explanation:

E = hc/ʎ

Therefore, ʎ = hc/E

ʎ = 4430.8 Å.

Answer 2

Answer:

(D)- 4430.8 A

Explanation:

this is your answer mate