An Optical System Comprises in Turn, from Left to Right

question 3

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

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Definitions:

Monopolistically Competitive

Refers to a market structure where many firms sell similar, but not identical, products, allowing for some degree of market power and differentiation.

Profit-Maximizing Output

The level of production at which a firm achieves the highest possible profit, where marginal revenue equals marginal cost.

Short Run

A period in economic theory during which some factors of production are fixed, and only some variables, typically labor or raw materials, can be adjusted.

Average Total Cost

The total cost divided by the number of units produced, representing the cost per unit of output.