A) A convergent lens of focal length 50 cm
B) A divergent lens of focal length 100 cm
C) A convergent lens of focal length 100 cm
D) A convergent lens of focal length 200 cm
Correct Answer: C
Solution :
\[\frac{1}{f}=\frac{1}{{{f}_{1}}}+\frac{1}{{{f}_{2}}}=\frac{{{P}_{1}}}{100}+\frac{{{P}_{2}}}{100}=\frac{1}{100}\Rightarrow f=100\]cm \[\therefore \] A convergent lens of focal length 100 cm.You need to login to perform this action.
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