One of the Absorption Lines of Hydrogen Has a Rest

question 11

Multiple Choice

One of the absorption lines of hydrogen has a rest wavelength of 656 nm (at rest means with respect to the observer, like in a lab) . You observe several stars and measure the wavelength of this same hydrogen absorption line in each star. Based on the measured wavelength of this line, which star is moving towards the Earth the fastest?

• A)630 nm
• B)670 nm
• C)640 nm
• D)680 nm
• E)656 nm

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Definitions:

Sexual Privilege

The advantages or rights implicitly granted to individuals based on their perceived or actual sexual orientation, often favoring heterosexuals.

Reputational Risk

The potential loss or damage to the standing or esteem of an individual or organization due to negative public perception.

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A concept referring to a sophisticated and elegant appearance or style often associated with high social status or quality.

Binary Thinking

The classification of concepts, beliefs, and entities into two opposing categories, often ignoring the existence of intermediate or alternative categories.