A) A divergent lens of focal length 50 cm
B) A convergent lens of focal length 50 cm
C) A convergent lens of focal length 100 cm
D) A divergent lens of focal length 100 cm
Correct Answer: C
Solution :
\[P={{P}_{1}}+{{P}_{2}}\Rightarrow P=+2+(-1)=+1D,\] \[f=\frac{+100}{P}=\frac{+100}{1}=100\,cm\]You need to login to perform this action.
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