Charge on Plates

A parallel plate capacitor has plate area $$A$$ and distance between plates $$d$$. Both the plates of a parallel plate capacitor are earthed and a charge $$Q = 50\text{ C}$$ is placed at a distance $$x=\frac{d}{3}$$ from lower plate (plate $$2$$).

Find the ratio of charge appearing on plate 2 to charge appearing on plate 1.

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