A) 400 cm
B) 200 cm
C) 100 cm
D) 50 cm
Correct Answer: C
Solution :
\[\frac{1}{f}=(\mu -1)\ \left( \frac{1}{{{R}_{1}}}-\frac{1}{{{R}_{2}}} \right)\] \[\frac{1}{f}=(1.6-1)\ \left( \frac{1}{60}-\frac{1}{\infty } \right)\]\[=\frac{1}{100}\]\[\Rightarrow f=100\,cm\]You need to login to perform this action.
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