Polarization By Reflection

The power dissipated by a transmission cable is related to the voltage across the cable and its resistance by the formula: This implies that the power dissipated by the resistance is proportional to the square of the voltage and inversely proportional to the resistance. Thus, the power dissipated is: Hence, the correct answer is (D).

Brewster's angle is the angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection. The relationship for Brewster's angle is given by: Where: - is the refractive index of the first medium (usually air), - is the refractive index of the second medium. Since the refractive index of air is less than most other materials, Brewster's angle usually lies between and depending on the relative refractive indices. Thus, Brewster's angle generally lies between and .