A) - 1 D
B) 0.5 D
C) 1D
D) - 0.5 D
Correct Answer: C
Solution :
From the relation\[\frac{1}{f}=\frac{1}{{{f}_{1}}}+\frac{1}{{{f}_{2}}}\] \[=\frac{1}{0.5}+\frac{1}{-1.0}=2-1=1\,D\]You need to login to perform this action.
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