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Questions  

The total energy of electron in an atom is a combination of potential energy and kinetic energy.  If total energy is –E for an electron in an atom, then its K.E. and P.E. respectively are

a
2E, –E
b
2E,E
c
E, –2E
d
E, –E

detailed solution

Correct option is C

we know KE=–TE                 PE=2×TE If  TE=−E     KE=E                  PE=2(−E)=−2E

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