Physics-
General
Easy

Question

Using thomson’s model of the atom, consider an atom consisting of two electrons, each of charge –e, embeded in a sphere of charge + 2e and radius R. In equilibrium each electron is at distance d from the centre of the atom. What is equilibrium separation between electrons?

  1. R    
  2. R/2    
  3. R/3    
  4. R/4    

The correct answer is: R/2

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