A 500 eV electron is fired directly towards a large metal plate having surface charge density 8 85 x 106 Cm 2 The distance from

Question

A 500 eV electron is fired directly towards a large metal plate having surface charge density 8 85 x 106 Cm 2 The distance from where electron be projected so that it just fails to strike the plate is O 0 2 mm O 0 33 mm O 0 5 mm O 1 21 mm

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