NEET Questions Solved

PMT - 2003

An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The coulomb force F between the two is (Where K=14πε0) 

(1) Ke2r3r^

(2) Ke2r3r

(3) Ke2r3r

(4) Ke2r2r^

(3) F=ke2r2r^=k.e2r3r      r^=rr  

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