ABO NOCE Practice Test

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Prepare for the ABO NOCE Exam with confidence! Our comprehensive exam guide includes multiple-choice questions, quizzes, and valuable study resources designed to help you excel. Get ready to showcase your knowledge and achieve your certification!

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What effect does a plus lens have on light?

It diverges light
It absorbs light
It reflects light
It converges light

The correct answer is: It converges light

A plus lens, also known as a convex lens, is specifically designed to converge light rays that pass through it. When parallel rays of light enter a plus lens, they are directed towards a single focal point on the opposite side of the lens. This is due to the shape of the lens, which is thicker in the center than at the edges. The curving surface of the lens bends the light rays inward, causing them to converge. This principle is utilized in various optical devices, including magnifying glasses and prescriptions for hyperopia (farsightedness). The ability of a plus lens to converge light makes it vital in correcting visual impairments where light needs to be focused more sharply on the retina. The other options do not accurately describe the behavior of light in a plus lens. For instance, diverging light would be indicative of a minus lens, while absorption and reflection pertain to different optical phenomena not related to the primary function of plus lenses.