Question
When light is incident on a medium at angle i and refracted into a second medium at an angle $ r$, the graph of $sin\, i $ vs $sin\,r $ is as shown in the graph. From this, one can conclude that
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Answer
$(b,c)$ From graph $\tan {30^o} = \frac{{\sin r}}{{\sin i}} = \frac{1}{{_1{\mu _2}}}$
==> $_1{\mu _2} = \sqrt 3 $ ==> $\frac{{{\mu _2}}}{{{\mu _1}}} = \frac{{{v_1}}}{{{v_2}}} = 1.73$ ==>${v_1} = 1.73\,{v_2}$
Also from $\mu = \frac{1}{{\sin C}}$ ==> $\sin C = \frac{1}{{_{Rarer}{\mu _{Denser}}}}$
==> $\sin C = \frac{1}{{_1{\mu _2}}} = \frac{1}{{\sqrt 3 }}$.
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