Lens-Maker's Formula: a Lens Is Made with a Focal Length

question 49

Multiple Choice

Lens-maker's formula: A lens is made with a focal length of -40 cm using a material with index of refraction 1.50. A second lens is made with the SAME GEOMETRY as the first lens, but using a material having refractive index of 2.00. What is the focal length of the second lens?

• A) -40 cm
• B) -80 cm
• C) -53 cm
• D) -20 cm
• E) -30 cm

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Definitions:

Machiavellianism

A personality trait characterized by manipulation, deceit, and exploitation of others to achieve one's own goals.

Unethical Practices

Actions or behaviors that violate moral principles, standards, or codes of conduct within a particular field or society.

Personal Gain

The achievement of personal benefits or advantages, often at the expense of others or ethical principles.

Locus of Control

A psychological concept referring to the extent to which individuals believe they have control over the events that affect their lives.