Shows these variation of charge q for two capacitors `C_(1)` and `C_(2)` The two capacitors have the same plate separation. But the plate area of `C_(2)` is double than that of `C_(1)`. Which of the lines in the figure corresponds to `C_(1)` and `C_(2)` and why?
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Explanation

Since slope of the graph is `q//V=C`, and has a larger slop than theline `B`, it represents the capacitor of large capacitance. Further as `C prop A` and the plate area of `C_(2)` is double that of `C_(1),C_(2)` has the larger capacitance, Hence, the line `A` (with larger slope) represents capacitor `C_(2)`, and the line `B` represents capacitor `C_(1)`.