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