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Lola617 Lola617
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Posts: 284
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5 years ago
The red laser beam from a helium-neon laser corresponds to a spectral line of
A) helium.
B) neon.
C) both of these
D) neither of these
Textbook 
Conceptual Physics

Conceptual Physics


Edition: 12th
Author:
Read 95 times
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jiangyangjiangyang
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5 years ago
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