PLIED PHYSICS I LY 20XX 18 Mock EXA 2. EITHER (a) Explain what is meant by the term 'plane of polarization" of a wave. Discuss two mechanisms which can result in polarisation of visible light. Draw diagrams to show whether or not both transverse and longitudinal waves have planes of polarization.. OR (b) Pressure is sometimes referred to as an energy density. Describe each term in Bernoulli's equation and what the overall equation is a description of. Use Bernoulli's Principle to explain qualitatively how an airplane wing develops an upward lift. When landing, airplanes head into the wind. Explain why. Remember, pressure is force per unit area