A) 3D
B) 1D
C) 2D
D) 4D
Correct Answer: C
Solution :
\[\frac{1}{f}=\frac{1}{v}-\frac{1}{u}\] \[=-\frac{2}{50}+\frac{1}{25}=\frac{-1+2}{50}\] \[\frac{1}{f}=\frac{1}{50}\] \[\Rightarrow \] \[f=50\,cm\] \[p=\frac{100}{50}=2D\]You need to login to perform this action.
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