The Focal Length of the Objective Lens of a Telescope

question 37

Multiple Choice

The focal length of the objective lens of a telescope is 75.0 cm,and the eyepiece has a focal length of 6.00 cm.What is the magnification of this telescope?

• A)0.0800
• B)0.645
• C)450
• D)12.5
• E)200

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Definitions:

MC

Short for marginal cost, it represents the change in total cost that arises when the quantity produced is incremented by one unit.

Herfindahl Index

An economic measure of market concentration, calculated by summing the squares of the market shares of all competitors within an industry.

Industry Concentration

A measure of the extent to which a small number of firms dominate the total production, sales, or market share in an industry.

Elastic

A measure in economics indicating how much the demand or supply of a good changes in response to a change in price.