A) 0.2 inch
B) 0.8 inch
C) 1.25 inch
D) 5 inch
Correct Answer: C
Solution :
\[m=\frac{v}{u}=5\Rightarrow v=5\] inch (Given u = 1 inch) Using sign convention \[u=-\ 1\ inch,\ \ v=-\ 5\ inch\] \[\therefore \frac{1}{f}=\frac{1}{v}-\frac{1}{u}=\frac{1}{-5}-\frac{1}{-1}\Rightarrow f=1.25\ inch\]You need to login to perform this action.
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