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A charged ball with mass m and charge q ...

A charged ball with mass m and charge q is dropped from a height h over a non-conducting smooth horizontal plane. There exists a uniform electric field `E_0` in vertically downward direction and the coefficient of restitution between the ball and the plane is e. Find the maximum height attained by the ball after `n^(th)` collision.

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The correct Answer is:
`he^(2n)`
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