Q19. A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is 1.42 eV . The wavelength of light emitted from the LED is : (1) 1400 nm (2) 650 nm (3) 875 nm (4) 1243 nm
Q19. A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is 1.42 eV . The wavelength of light emitted from the LED is :\\
(1) 1400 nm\\
(2) 650 nm\\
(3) 875 nm\\
(4) 1243 nm