What will be the relative population of atoms in a ruby layer that produces a light beam of wavelength 6943 at 300 K.

What will be the relative population of atoms in a ruby layer that pro

1.	What will be the relative population of atoms in a ruby layer that produces a light beam of wavelength 6943 at 300 K.
A.	5 X 10<sup>-31</sup>
B.	6 X 10<sup>-31</sup>
C.	7 X 10<sup>-31</sup>
D.	8 X 10<sup>-31</sup>
Answer» E.