American Board of Opticianry (ABO) Practice Test 2026 - Free ABO Practice Questions and Study Guide

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What characterizes minus lenses?

the speed of light in air divided by the speed of light in the material

minus spheres are used for farsightedness

can be characterized by diverging/with motion

Minus lenses are characterized by their ability to diverge light. This is in contrast to plus lenses (option D) which can converge light. Option A and B do not accurately describe the characteristics of minus lenses and thus are incorrect.

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plus lenses can be characterized by converging/against motion

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