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GATE PH concept:hyperfine-structures PYQs

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GATE PH syllabus

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Question 10

Open question
PHMCQ1 markNeeds review
Match the physical effects and order of magnitude of their energy scales given below, where

is fine structure constant;

and

are electron and proton mass, respectively.
Group I
Group II
P: Lamb shift
1:

Q: Fine structure
2:

R: Bohr energy
3:

S: Hyperfine structure
4:

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