A Plano-Concave Lens Has R₁ = 15 Cm and Is

question 34

Multiple Choice

A plano-concave lens has r₁ = 15 cm and is constructed of a material with refractive index of 1.5. The focal length of the lens is

• A) "-15 cm."
• B) "15 cm."
• C) "-30 cm."
• D) "30 cm."
• E) "None of these is correct."

---

Definitions:

Monopolistic Producer

A single producer or a company that has exclusive control over the supply of a particular good or service, making it the only entity in the market capable of determining price and output levels.

Marginal Cost

The expense incurred from the manufacture of an extra single unit of a product or service.

Monopolist

An individual or entity that has exclusive control over the supply of a particular good or service, allowing for the manipulation of prices.

Minimum Wage Law

Legislation that sets the lowest hourly wage rate that an employer can legally pay its workers.