The Hg Line Has a Wavelength of 434

question 121

Multiple Choice

The Hg line has a wavelength of 434.0 nm when observed in the laboratory.If the Hg line appears in a the spectrum of a star moving away from you,at what wavelength will you observe the line?

• A)less than 434 nm
• B)434.0 nm
• C)greater than 434 nm
• D)the wavelength depends on the composition of the star

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