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What is meant by plane polarised light? An unpolarised light is incident at an angle θ on the surface of glass of refractive index μ. If the reflected and refracted rays are perpendicular to each other, then obtain the relationship between μ and θ. |
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Answer» • Plane polarised light is a term used to describe the polarisation state of the source light used in polarising microscopes. • Polarised light is light that vibrates in a single direction due to its passage through a polariser. • In a polarising microscope the lower polariser is usually orientated so that light vibrates parallel to the E-W direction. • If the upper polariser (the analyser), is not inserted the view is said to be under plane polarised light, often abbreviated to PPL. |
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