A) Less than\[{{\theta }_{2}}\]
B) Between \[{{\theta }_{1}}\] and\[{{\theta }_{2}}\]
C) Greater than \[{{\theta }_{2}}\]
D) Less than \[{{\theta }_{1}}\]
Correct Answer: C
Solution :
[c] \[\sin {{\theta }_{1}}=\frac{1}{{{\mu }_{g}}}\]and \[\sin {{\theta }_{2}}=\frac{1}{{{\mu }_{w}}}\] Since \[{{\mu }_{g}}>{{\mu }_{w,}}{{\theta }_{1}}<{{\theta }_{2}}\] Critical angle \[\theta \]between glass and water will be given by \[\sin \theta =\frac{{{\mu }_{w}}}{{{\mu }_{g}}}\] Or \[\theta >{{\theta }_{2}}\]
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