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  The light beam shown in the figure on the right
makes an angle of 20.0° with the normal line NN’ in
the linseed oil. Determine the angles θ and θ’. (Note:
The index of refraction of linseed oil is 1.48.)  

  • physices -

    sinθ/sinθ' = 1.48
    sinθ' = sin20°/1.48 = 0.231
    θ = 13.36°

    Best I can do with no diagram.

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