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

question 21

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.

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Definitions:

Countercultures

Social groups that reject and oppose significant elements of the dominant culture, often creating their own norms and values.

Social Control

involves mechanisms, strategies, and institutions designed to regulate individual and group behavior, aiming to maintain conformity and compliance with societal norms and rules.

Consumerism

The societal trend characterized by the acquisition of goods and services in ever-increasing amounts.

Define Ourselves

The process by which individuals interpret, perceive, and assign meaning to their own identities, often influenced by social interaction and cultural norms.