QII. Apply the law of reflection and Snell's law or the law of refraction when light travels from air to dense flint glass. Refer to the table below for the refractive index of the given materials. Medium Refractive Medium Refractive index index Air 1.0003 Crown glass 1.52 Ice 1.31 Canada Balsam 1.53 Water 1.33 Rock salt 1.54 Alcohol 1.36 Carbon disulphide Dense flint glass Ruby 1.63 Kerosene 1.44 1.65 Fused quartz 1.46 1.71 Turpentine oil 1.47 Sapphire 1.77 Benzene 1.50 Diamond 2.42

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Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as: