Multiple Choice
The best wavelength to use to observe a solar prominence is
A) 550 nm, green visible light.
B) 656 nm, a red hydrogen emission line.
C) 16 mm, an ultraviolet emission line.
D) 21 cm, microwave emission.
E) 0.02 nm, X-ray emission.
Correct Answer:

Verified
Correct Answer:
Verified
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