Physics, asked by sundasnaheed123, 6 months ago

26
In Helium-Neon laser, population inversion of
atoms is achieved which emit
radiations, when they are stimulated to fall at lower level.
A) Neon
C) Helium and Neon
B) Helium
D) Chromium​

Answers

Answered by umar3358
1
Helium and neon is your answer
Similar questions