A Contact Lens Is Made of Plastic with an Index

question 43

Multiple Choice

A contact lens is made of plastic with an index of refraction 2.70.The lens has an outer radius of curvature of + 3.3 cm and an inner radius of curvature of + 4.5 cm.What is its focal length?

• A) -7.3 cm
• B) +4.6 cm
• C) +1.1 cm
• D) +7.3 cm
• E) -1.1 cm

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Definitions:

Utilitarianism

An ethical theory that posits the best action is the one that maximizes utility, often defined as maximizing happiness and reducing suffering.

Cost-benefit Analysis

An economic evaluation method that compares the costs and benefits of an action or decision to determine its feasibility or worth.

Ethical Theory

A systematic exposition of principles, concepts, and theories that guide moral behavior and distinguish right from wrong.

Universal Laws

Fundamental principles or laws that are believed to be universally applicable, regardless of systems or beliefs.