The Focal Lengths of the Objective Lens and the Eyepiece

question 125

Multiple Choice

The focal lengths of the objective lens and the eyepiece in a microscope are 2.90 mm and 2.50 cm, respectively. An object is placed 3.00 mm from the objective. The image of this object is viewed
With the eyepiece adjusted for minimum eyestrain for persons with a near point of 25 cm. What is
The distance between the objective and the eyepiece?

• A) 9.0 cm
• B) 15 cm
• C) 11 cm
• D) 13 cm
• E) 9.9 cm

---

Definitions:

Development

The process of growth or advancement, often through successive stages, in individuals, societies, or institutions.

Preconventional Stage

The first level in Kohlberg’s theory of moral development, where moral reasoning is based on external rewards and punishments.

Moral Reasoning

The process by which individuals make decisions about what is right and wrong, often based on personal ethics, societal norms, and considerations of justice and fairness.

Social Contract

A theory or model that explains how individuals consent, either implicitly or explicitly, to surrender some of their freedoms and submit to the authority of the state in exchange for protection of their remaining rights.