If the reflection coefficient is 0.75, estimate the return loss for the device

What type of a material would have a very large band gap and would need a large amount of energy to move the electron from the valence band to the conduction band? insulator metal conductor alkaline earth metal semiconductor

The reflection coefficient for a device is found to be 0.75. What will be the corresponding return loss of the device?

True or Flase Light emitting diode, LEDs, with colors  with different wavelength acts as source of lights but not the laser.

Explain why silicon solar cells mainly use SiN with a thickness of 70 nm as ananti-reflection film

(1) Without using Laplace Transform Obtain an expression for i as labeled in Fig. 9.49 which is valid for all t> 0. iL 500 mH 80 Ω 20i1 5u(-t) mA 1 mF VC FIGURE 9.49

What are the sources of optical losses in solar cells and mechanism of losses