A) 12 cm
B) 30 cm
C) 50 cm
D) 60 cm
Correct Answer: C
Solution :
For lens \[u=30\ cm,\ \ f=20\,cm\ \], hence by using \[\frac{1}{f}=\frac{1}{v}-\frac{1}{u}\]\[\Rightarrow \]\[\frac{1}{+20}=\frac{1}{v}-\frac{1}{-30}\Rightarrow v=60\ cm\]You need to login to perform this action.
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