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Solution


Q.

An electron rotates in a circle around a nucleus having positive charge Ze. Correct relation between total energy (E) of electron to its potential energy (U) is     [2024]
1 2E = 3U  
2 E = 2U  
3 E = U  
4 2E = U  

Ans.

(4)           

            Total energy E=-kZe22r

            Potential energy U=-kZe2r⇒U=2E