A ray of light travels from air into another medium, making an angle of 0, = 45.0° with the normal as in the figure below. Air Second medium (a) Find the angle of refraction 0, if the second medium is sodium chloride. (b) Find the angle of refraction 0, if the second medium is polystyrene. (c) Find the angle of refraction 0, if the second medium is benzene.

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