Page 646 - SUBSEC October 2017_Neat
P. 646

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                           (ii)    A ray of light is incident perpendicular to the surface BC, as shown in Figure 3.  If
                                  total internal reflection occurs, determine the maximum angle ɸ of the prism.

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                    (g)    The prism in part (f) is immersed in a liquid.  Find the ratio of the speed of light in the prism
                           to the speed of light in the liquid, if the critical angle for light travelling from the prism into
                           the liquid is 32.0°.


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                                                                                              Total 30 marks

























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