Multiple Choice
Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shifted to 656.08 nm. How fast is the star moving (Note: The speed of light is approximately 300,000 km/s, or 3 × 105 km/s.) ?
A) about 1,000 km/s
B) about 10,000 km/s
C) about 100 km/s
D) about 1,000,000 km/s
Correct Answer:
Verified
Correct Answer:
Verified
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