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JEE Main Physics Class 12 Atoms and Nuclei Part 1 Questions
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Question : 35
Total: 100
As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :
[2015]
kinetic energy decreases, potential energy increases but total energy remains same
kinetic energy and total energy decrease but potential energy increases
its kinetic energy increases but potential energy and total energy decrease
kinetic energy, potential energy and total energy decrease
Validate
Solution:
Kinetic energy of electron is
K.E.
∝
(
Z
N
)
2
When the electron makes transition from excited state to ground state, then n increases and kinetic energy increases.
Total energy = – KE
∴ Total energy also decreases.
Potential energy is lowest for ground state.
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