MCQ
लैंस सूत्र है-
- A$\frac{1}{v}+\frac{1}{u}=\frac{1}{f}$
- ✓$\frac{1}{v}-\frac{1}{u}=\frac{1}{f}$
- C$\frac{1}{u}-\frac{1}{v}=\frac{1}{f}$
- D$\frac{1}{u}+\frac{1}{v}=\frac{1}{f}$
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