The Angular Magnification of a Refracting Telescope Is 40

question 28

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 focal length of
The objective lens?

• A) 138 cm
• B) 140 cm
• C) 139 cm
• D) 141 cm

---

Definitions:

Alternative Hypothesis

A hypothesis that contradicts the null hypothesis, asserting there is a significant difference or effect.

Type I Error

The mistaken dismissal of a correct null hypothesis, often referred to as a "false positive."

Null Hypothesis

A statement or premise in statistics that implies no significant effect or relationship between variables, serving as a default position until evidence suggests otherwise.

Alternative Hypothesis

The hypothesis that contradicts the null hypothesis, typically proposing a new effect, difference, or relationship.