A light ray is incident on air-liquid interface at 45°and is refracted at 30°. What is the refractive
index of the liquid? For what angle of incidence will the angle between reflected ray and refracted
ray be 90°? (AS)
(Ans: 1.414, 54.79)
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Surface properties of polymers and competition adsorption of toluene and heptane on silica were studied using IR-visible sum frequency generation (SFG) vibrational spectroscopy. SFG is intrinsically surface sensitive because the second-order optical process is forbidden in media with inversion symmetry, such as bulk polymers and liquids. This nonlinear optical technique provides surface ...
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