When a Distant Source Emits Light of a Particular Wavelength

question 4

Multiple Choice

When a distant source emits light of a particular wavelength in the visible, and the source is moving away from us, the color of the light appears to us to be shifted toward the

• A) red end of the visible spectrum.
• B) blue end of the visible spectrum.

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Definitions:

Percentage Less

The reduced amount expressed as a fraction of a hundred.

Sales

The exchange of goods or services for money, constituting the primary source of revenue for most businesses.

Percent Change

The percentage difference between two values, indicating the degree of increase or decrease.

Unit Price

The price of a single unit of a product, used for comparison between different sizes or quantities.