Hand written solution required

2. Distinguish between unpolarised and a linearly polarised light. Describe, with the help of a diagram, how unpolarised light gets linearly polarised by scattering. Explain it clearly. [4 marks] Explain the principle behind the rainbow formation in thin films such as soap bubbles, oil spills, glass and lenses. You need to illustrate using a diagram and provide the theory for thin interference.(lVlake sure to write the rule) [4 marks]