A) 20
B) 30
C) 60
D) 15
Correct Answer: B
Solution :
\[m=\frac{{{f}_{o}}}{{{f}_{e}}}\left( 1+\frac{{{f}_{e}}}{D} \right)=\frac{150}{6}\left( 1+\frac{6}{25} \right)=30\].You need to login to perform this action.
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