A) \[\frac{b}{c}\]
B) \[\frac{b}{ca}\]
C) \[\frac{bc}{a}\]
D) \[\frac{c}{b}\]
Correct Answer: D
Solution :
For a lens \[m=\frac{f-v}{f}=-\frac{1}{f}v+1\] Comparing it with y = mx + c Slope \[=m=-\frac{1}{f}\] From graph, slope of the line \[=\frac{b}{c}\] Hence \[-\frac{1}{f}=\frac{b}{c}\] Þ \[|\,f|\,=\frac{c}{b}\]You need to login to perform this action.
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