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MHT CET20228 Aug 2022Evening ShiftPhysicsAtomic PhysicsActual

The potential energy of the orbital electron in the ground state of hydrogen atoms is - E . What is the kinetic energy?

Options

  1. A4 E
  2. BE 4
  3. CE 2
  4. D2 E

Correct answer

C. E 2

Step-by-step solution

The potential energy of U ( n =1)=- E Goomd state: total energy is given by TE = U + K U =- ( ze ^2 ) 4 ₀ For orbit consider force balance ze ^2 4 ₀ r ^2 = mv ^2 r K = mv ^2 2 = 1 2 ( ze ^2 4 ₀ r ^2 ) Thus, K = E 2 = U 2

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