Consider an electron in front of metallic surface at a distance  d (treated as
Channel: Doubtnut
Date: 2020-08-02

Consider an electron in front of metallic surface at a distance  d (treated as an infinite plane surface). Assume the force of attraction by the plate is given as `1/4 (q^(2))/(4pi in_(0)d^(2))`.  Calculate work in taking the charge to an infinite distance from the plate. Taking d=0.1nm, find the work done in electron volts. [Such a force law is not valid for d lt 0.1nm].