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What type of lens diverges light?

  1. Plus

  2. Minus

  3. Concave

  4. Aspheric

The correct answer is: Minus

The type of lens that diverges light is a minus lens. A minus lens is concave in shape, meaning it is thinner at the center than at the edges. When parallel rays of light enter a minus lens, they are refracted outward, causing them to diverge. This property is essential in various optical applications, especially in correcting myopia (nearsightedness), where light needs to be spread out so that it correctly focuses on the retina. While concave lenses typically refer to those that diverge light, the term 'minus' specifically indicates the numerical value associated with the lens power in optics, which confirms its diverging nature. As for plus lenses, they are convex and converge light rays, while aspheric lenses are designed to reduce optical aberrations and can be either converging or diverging based on their specific design. Thus, the clear identification of minus lenses as those that diverge light is critical for understanding optical principles.