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:

Public Good

A good that is non-excludable and non-rivalrous, meaning individuals cannot be effectively excluded from its use, and one individual's use does not reduce availability to others.

Asymmetric Information

A situation where one party to a market transaction has much more information about a product or service than the other. The result may be an under- or overallocation of resources.

Inefficient Outcomes

Situations where resources are not allocated optimally, resulting in potential losses in economic welfare.

Allocative Efficiency

A state of resource allocation where it is impossible to make any one individual better off without making someone else worse off, often achieved when marginal cost equals marginal benefit.