KCET 2016 Physics Solved Paper

Given, total energy of electron = −3.4 eV
Now, | total energy | = | kinetic energy |
Therefore, kinetic energy of electron in this excited state is 3.4 eV
Potential energy of electron = 2 × Total energy
=2×(−3.4eV)=−6.8eV
(∵ Total energy = Kinetic energy + Potential energy ⇒ 2 × Total energy = Potential energy )
Therefore, kinetic energy and potential energy of electron in this state is 3.4 eV and −6.8 eV, respectively