A Compound Lens Is Made by Joining the Plane Surfaces

question 46

Multiple Choice

A compound lens is made by joining the plane surfaces of two thin plano-convex lenses of different glasses.The radius of curvature of each convex surface is 80 cm.The indices of refraction of the two glasses are 1.50 and 1.60.What is the focal length of the compound lens?

• A) 67
• B) 69
• C) 71
• D) 73
• E) 75

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Definitions:

Natural Selection

A process in evolutionary biology where organisms better adapted to their environment tend to survive and produce more offspring.

Sociobiologists

Scientists who study the biological basis of all forms of social behavior, including in humans, in the context of evolution.

Evolutionarily Beneficial

Traits or behaviors that increase the chances of survival and reproduction, thus being favored by natural selection.

Sexual Novelty

The introduction of new or unfamiliar elements into sexual activities or relationships to enhance arousal and satisfaction.