A) 5 : 3
B) 3 : 5
C) 2 : 5
D) 5 : 2
Correct Answer: B
Solution :
\[{{P}_{1}}+{{P}_{2}}=2D\] and \[{{P}_{1}}=5\,D,\] so \[{{P}_{2}}=-\,3\,D\] For achromatic combination \[\frac{{{\omega }_{1}}}{{{\omega }_{2}}}=\left( -\frac{{{p}_{2}}}{{{p}_{1}}} \right)\]\[=-\,\left( \frac{-\,3}{5} \right)=\frac{3}{5}\]You need to login to perform this action.
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