In a Scene from a Movie,a Nearsighted Character Removes His

question 37

Multiple Choice

In a scene from a movie,a nearsighted character removes his eyeglasses and uses them to focus the nearly parallel rays of the sun to start a fire.What is physically wrong with this scene?

• A)The eyeglasses have diverging lenses and cannot be used to focus parallel rays.
• B)The eyeglasses have converging lenses and cannot be used to focus parallel rays.
• C)Sunlight cannot be used to start a fire.
• D)A fire can only be started if the image is virtual.
• E)Parallel rays cannot be focused.

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Definitions:

Lumen

The internal space or cavity of a tubular structure, such as a blood vessel or the intestine.

Tunica Adventitia

The tunica adventitia is the outermost layer of a blood vessel, consisting of connective tissue, that provides structural support and protection.

External Elastic Lamina

The outermost layer of elastic tissue found in the walls of arteries, contributing to the elasticity and strength of the blood vessels.

Tunica Media

The middle layer of the wall of a blood vessel, containing smooth muscle cells and elastic fibers.