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Home
All Subjects
CSS
CSS MPT
CSS Subjects MCQs
CSS Past Papers
Past Papers
Testing Agencies Papers
Departmental Past Papers
Post Wise Papers
Service Related MCQs
Departments Related MCQs
Service Commission
FPSC
PPSC
SPSC
BPSC
KPPSC
Current Affairs
National Current Affairs MCQs
International Current Affairs MCQs
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Army/Navy/Air force
Jobs Update
Mobile App
Entry Tests
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Subject:
Physics
Laser upper state condition is_____________?
A.
metastable
B.
normal
C.
population inversion
D.
all
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