A. excitation of gas molecules
B. conduction of solar energy
C. refraction of light by gas molecules
D. thermal agitation of electron in the tubes
Correct Answer:
Option A – excitation of gas molecules
A. excitation of gas molecules
B. conduction of solar energy
C. refraction of light by gas molecules
D. thermal agitation of electron in the tubes
Correct Answer:
Option A – excitation of gas molecules
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