The Angular Magnification of a Refracting Telescope Is 40

question 113

Multiple Choice

The angular magnification of a refracting telescope is 40. When the object and final image are both at infinity, the distance between the eyepiece and the objective is 143.5 cm. The telescope is used to
View a distant radio tower. The real image of the tower, formed by the objective, is 6.0 mm in
Height. The focal point of the eyepiece is positioned at the real image. What is the angle subtended
By the final image of the tower?

• A) 0.19 rad
• B) 0.23 rad
• C) 0.15 rad
• D) 0.21 rad
• E) 0.17 rad

---

Definitions:

Dyspnea

Difficult or labored breathing.

Cheyne-Stokes

A breathing pattern characterized by alternating periods of apnea and hyperventilation.

Apnea

The absence of breathing.

Rales

An unusual sound heard in the bronchi on examination of respirations.