A) 1.2
B) 1.3
C) 1.4
D) 1.5
Correct Answer: B
Solution :
For total internal reflection, at PQ \[\theta <C\] From geometry of figure, \[\theta =60\,\,i.e.,\,60>C\] \[=\sin 60>\sin C\] \[=\frac{\sqrt{3}}{2}>\frac{{{\mu }_{liquid}}}{{{\mu }_{prism}}}\] \[={{\mu }_{liquid}}<\frac{\sqrt{3}}{2}\times {{\mu }_{prism}}\] \[={{\mu }_{liquid}}<\frac{\sqrt{3}}{2}1.5\] \[={{\mu }_{liquid}}<1.3\]You need to login to perform this action.
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