MCQ
A situation of population inversion is related to
- AMatter wave
- B$\gamma$-ray
- C$X$-ray
- ✓$LASER$
✓
Answer
Correct option: D.
$LASER$
d
(d)
(d)
A situation of population inversion means when more atoms in a group are in the excited state than lower energy states. This is used in $LASER$.
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