A) \[te{{n}^{-1}}(2/3)\]
B) \[{{60}^{0}}\]
C) \[{{90}^{0}}\]
D) \[{{30}^{0}}\]
Correct Answer: C
Solution :
[c] \[\angle ABO=\angle OAB={{\theta }_{c}}\] \[\sin {{\theta }_{c}}=\frac{1}{\mu }=\frac{2}{3}\] Applying snell's law at A \[\frac{\sin i}{\sin {{\theta }_{C}}}=\frac{3}{2}\] \[\sin i=\left( \frac{3}{2} \right)\left( \frac{2}{3} \right)=1\] Or \[i=90{}^\circ \]You need to login to perform this action.
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