An Astronomical Telescope Has an Objective of Diameter 20 Cm

question 17

Multiple Choice

An astronomical telescope has an objective of diameter 20 cm with a focal length of 180 cm.The telescope is used with an eyepiece of focal length 30 mm.What is the angular magnification of this telescope?

• A) 360 x
• B) 60 x
• C) 540 x
• D) 6 x
• E) 180 x

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Definitions:

Visual Images

Mental representations of physical objects or scenes that are not currently being observed, often utilized in cognitive processes such as memory and imagination.

Visual Perception

The ability to interpret and make sense of visual stimuli from the environment through the process of sight.

Spatial Arrangement

The organization and placement of objects in space, often requiring an understanding of structure and the relationships between items.

Principle Of Equivalence

The concept in decision theory that choices should be consistent when presented in different forms but representing the same problem.