A) 2.5
B) 3.5
C) 2.2
D) 3.0
Correct Answer: A
Solution :
Power of combination, \[P={{P}_{1}}+{{P}_{2}}\] \[P=+200-10=+10D\] \[F=\frac{1}{P}+\frac{1}{10}m=\frac{100}{10}\,\,cm=10\,\,cm\] For final image at infinity \[M=\frac{D}{F}=\frac{25}{10}=2.5\]You need to login to perform this action.
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