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An electron ' \( \mathrm{e} \) ' is released from the bottom plate \( A \) as shown in the figure \( \left(\mathrm{E}=10^{4} \mathrm{NC}^{-1}\right) \). The velocity of the electron when it reaches plate B will be equal to
(1) \( 2.72 \times 10^{7} \mathrm{~m} / \mathrm{s} \)
(2) \( 1.0 \times 10^{7} \mathrm{~m} / \mathrm{s} \)
(3) \( 1.25 \times 10^{7} \mathrm{~m} / \mathrm{s} \)
(4) \( 1.65 \times 10^{7} \mathrm{~m} / \mathrm{s} \)
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