JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

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100 \mathrm{~eV}

electron is fired directly towards a large metal plate having surface charge density

-2 \times 10^6 \mathrm{~C} \mathrm{~m}^{-2}

. The distance from where the electron is projected so that just fails to strike the plate is

View answer and explanation

Correct option: A

0.44 \mathrm{~mm}

Option A (

0.44 \text{{ mm}}

) is correct because it calculates the distance at which the electron's kinetic energy is completely converted to potential energy due to the electric field.

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