The Hδ Line Has a Wavelength of 410 $6.0 × 10^7$

question 24

Multiple Choice

The Hδ line has a wavelength of 410.2 nm when observed in the laboratory. If the Hδ line appears in a stars spectrum at 410.0 nm, what is the radial velocity of the star

• A)146 km/s away from the observer
• B)146 km/s toward the observer
• C)\(6.0 × 10^7\) m/s away from the observer
• D)\(6.0 × 10^7\) m/s toward the observer
• E)The radial velocity of the star cannot be determined from this information.

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