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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2003
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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 - <br> (where K=14πε0 )


( A ) Ke2r3ˆr
( B ) Ke2r3r
( C ) Ke2r3r
( D ) Ke2r2ˆr
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