A) 0.33
B) 0.25
C) 0.75
D) 0.80
Correct Answer: C
Solution :
\[\mu =\tan \theta \left( 1-\frac{1}{{{n}^{2}}} \right)\] \[\theta =45{}^\circ \] and \[n=2\] (Given) \[\therefore \] \[\mu =\tan 45{}^\circ \left( 1-\frac{1}{{{2}^{2}}} \right)=1-\frac{1}{4}=\frac{3}{4}=0.75\]You need to login to perform this action.
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