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

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Definitions:

Phenomena

Observable events or occurrences that can be investigated scientifically.

Theory

A set of principles on which the practice of an activity is based or an explanation of the principles of phenomena.

Confirmation Bias

A cognitive bias that involves favoring information that confirms previously existing beliefs or biases.

Principle Of Falsifiability

The criterion for demarcating scientific from non-scientific statements; a theory must be testable and potentially able to be proven false.