# The angular momentum of electron in a given orbit is J . Its kinetic energy will be :

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The angular momentum of electron in a given orbit is J . Its kinetic energy will be :
A. 1/2(J^(2))/(mr^(2))
B. (Jv)/(r)
C. (J^(2))/(2m)
D. (J^(2))/(2pi)

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