What type of image does a concave lens always form?
A concave lens always forms a virtual image. This is because it diverges light rays, causing them to spread out. When the diverged rays are traced back, they appear to originate from a single point on the same side of the lens as the object, resulting in a virtual image that is upright and smaller than the object.
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A concave lens, also known as a diverging lens, spreads out light rays that pass through it. The correct answer is [B] Virtual image. This divergence causes the light rays to appear as though they are originating from a single point on the same side of the lens as the object. Hence, the image formed is virtual, meaning it cannot be projected onto a screen. Additionally, the virtual image is upright and smaller compared to the actual object. Unlike a convex lens, which can produce both real and virtual images depending on the object’s position, a concave lens consistently produces a virtual image regardless of the object’s distance from the lens. This fundamental characteristic of concave lenses is utilized in various optical devices such as eyeglasses for correcting nearsightedness and certain types of cameras.