Author Question: Discrete spectral lines are observed when excitation occurs in a A) solid. B) liquid. C) gas. ... (Read 118 times)

dollx · **on:** Jul 29, 2018

Discrete spectral lines are observed when excitation occurs in a

A) solid.
B) liquid.
C) gas.
D) superconductor.
E) all of the above

Question 2

Comparing the light from a glowing tube of neon gas and the beam of a helium-neon laser, there is a greater number of spectral lines in light from the

A) neon gas tube.
B) laser beam.
C) both about the same