Which lens a camera uses to form an image?

A. Convex lens
B. Concave lens
C. Condenser lens
D. None of these

Check Answer

The correct answer is: A) convex lens.

A camera uses a convex lens to form an image. A convex lens is a lens that is thicker at the center than at the edges, and that bulges outward. When light rays pass through a convex lens, they are bent (or refracted) in such a way that they converge at a single point, called the focus. The distance from the lens to the focus is known as the focal length.

The image that is formed by a convex lens is usually smaller than the object being photographed, and is typically inverted (upside down). In a camera, the image is typically formed on a light-sensitive surface, such as film or a digital sensor, which captures the image for later viewing or processing.

Concave lenses are lenses that are thinner at the center than at the edges, and that curve inward. They are used to spread out light rays, rather than converging them, and are often used in lighting and other applications where a wide beam of light is needed.
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