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:

Audience Effect

The phenomenon where an individual's performance is influenced by the presence of others, typically improving on simple or well-rehearsed tasks and declining on complex or new ones.

Transparency Effect

The belief or expectation that one's personal, internal states are more apparent to others than they actually are.

Extrinsic Motivation

Motivation fueled by external incentives like financial gain, recognition, academic achievement, and commendation.

Intrinsic Motivation

A form of motivation driven by an internal reward system or personal satisfaction.