Find the Radius of a Star Image Formed on the Retina

question 9

Multiple Choice

Find the radius of a star image formed on the retina of the eye if the aperture diameter (the pupil) at night is 0.70 cm and the length of the eye is 3.0 cm.Assume the wavelength of starlight in the eye is 600 nm.(1 nm = 10−⁹ m)

• A) 5.2 × 10−⁴ m
• B) 3.1 × 10−⁶ m
• C) 2.6 × 10−⁶ m
• D) 2.6 × 10−⁴ m

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Definitions:

Base Period

A specific time period used as a benchmark or point of reference for comparing financial or economic data over time.

Horizontal Analysis

A financial analysis technique that compares line items in financial statements over multiple periods to identify trends.

Financial Data Across Time

Refers to historical financial statistics, such as revenue, profits, and expenses, tracked over different periods to analyze trends and performance.

Vertical Analysis

A method of financial statement analysis in which each entry on a single financial statement is listed as a percentage of another item, typically used to assess relative changes over time within the statement.