1.

An LED made of Ga-As operates at a wavelength of 0.86 μm. The surrounding medium is air. The relative permittivity of Ga-As is 12.9. The external quantum efficiency of LED is

A. 2.31%
B. 23.1%
C. 13.1%
D. 1.31%
Answer» E.


Discussion

No Comment Found

Related MCQs