An Optical System Comprises in Turn,from Left to Right: an Observer,a

question 38

Multiple Choice

An optical system comprises in turn,from left to right: an observer,a lens of focal length +30 cm,an erect object 20 mm high,and a convex mirror of radius 80 cm.The object is between the lens and the mirror,20 cm from the lens and 50 cm from the mirror.The observer views the image that is formed first by reflection and then by refraction.What is the position of the final image,measured from the mirror?

• A)90 cm
• B)102 cm
• C)114 cm
• D)126 cm
• E)138 cm

Distinguish between inelastic, unit elastic, and elastic demand based on elasticity values.

Understanding the relationship between the proportion of income spent on a good and its elasticity of demand.

Differentiate between normal and inferior goods through income elasticity.

Identify the goals of scientific research in behavior.

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Definitions:

Net Income

The total earnings of a company after subtracting all expenses, including taxes and operating costs, indicative of its profitability.

Sales Mix

The combination of different products or services that a company sells, each contributing to total sales revenue.

Break-even Point

The point at which total costs and total revenue are equal, meaning no net loss or gain is incurred by the business.

Contribution Margin Ratio

The percentage of each sales dollar that remains after variable costs have been deducted, indicating how much contributes towards fixed costs and profit.