A) \[60\,\,cm\]
B) \[50\,\,cm\]
C) \[30\,\,cm\]
D) \[20\,\,cm\]
Correct Answer: B
Solution :
The given situation can be shown as Here, \[u=OC=-30\,\,cm\] \[f=20\,\,cm\] By using,\[\frac{1}{v}=\frac{1}{f}+\frac{1}{u}\] \[=\frac{1}{20}-\frac{1}{30}=\frac{1}{60}\] \[\Rightarrow \] \[v=60\,\,cm\] To obtain upright image of \[O\] at \[O\] itself \[v=O{{C}_{1}}=x+10\] \[\Rightarrow \] \[x=v-10=60-10=50\,\,cm\]You need to login to perform this action.
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