A) \[\sqrt{1.5}\]
B) \[\sqrt{2}\]
C) \[\sqrt{3}\]
D) \[\sqrt{2.5}\]
Correct Answer: C
Solution :
\[r+90+60\text{ }=180{}^\circ \] \[\therefore \,\,\,r\,\,=\,\,30{}^\circ \] Snell law \[\mu \,sin\text{ }r=1\,\,\times \,\,sin\text{ }60{}^\circ \] \[\mu \,\,\times \,\,sin\text{ }30\,\,=\,\,1\,\,\times \,\,sin\text{ }60{}^\circ \] \[\frac{\mu }{2}\,\,=\,\,\frac{\sqrt{3}}{2}\] \[\mu =\sqrt{3}\]You need to login to perform this action.
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