A Telescope Has an Angular Magnification of 250 When Used

question 42

Multiple Choice

A telescope has an angular magnification of 250 when used with a 20 mm eyepiece.What is the focal length of the objective lens?

• A)5.0 cm
• B)25 m
• C)5000 cm
• D)5.0 m
• E)2.5 m

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Definitions:

Coronary Circulation

The system of blood vessels that delivers blood to the heart muscle and returns blood from the heart muscle to the right atrium.

Angiotensin II

A peptide hormone formed by the action of angiotensin-converting enzyme on angiotensin I; stimulates aldosterone secretion by the adrenal cortex.

Cardiovascular Disease

Disease of the heart or blood vessels; the leading cause of death in most industrial societies.

Blood Vessels

Tubular structures carrying blood through the tissues and organs; a vital part of the circulatory system.