AIPMT PRELIMS2005Physics-Atomic Physics
AIPMT PRELIMS 2005 Physics Bohr Model MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The total energy of an electron in the first excited state of hydrogen is abou.4 eV. Its kinetic energy in this state is:
A
-3.4 eV
B
-1.7 eV
C
1.7 eV
D
3.4 eV
Correct Answer
Option D
Detailed Explanation
In the Bohr model, the total energy of an electron is the sum of its kinetic and potential energies. The kinetic energy is equal in magnitude and opposite in sign to the total energy, so it is 3.4 eV.
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