define convex lens and concave lens and its uses with full definition
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A convex lens or converging lens focuses the light rays to a specific point whereas a concave lens or diverging lens diverges the light rays. A lens is a transparent material (either curved or flat surface) based on the principles of refraction. Concave lenses and convex lenses are often used together with known as the Concave – Convex lens. When these lenses are combined, they produce sharper images. Most of the eyeglass lenses use combinations of convex and concave lenses. Cameras, telescopes, and microscopes use different lens, helping us to see the world in a better way.
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Comparison Chart
BASIS FOR COMPARISON CONVEX LENS CONCAVE LENS
Meaning Convex lens refers to the lens which merges the light rays at a particular point, that travels through it. Concave lens can be identified as the lens which disperses the light rays around, that hits the lenses.
Figure convex lens concave lens
Curve Outward Inward
Light Converges Diverges
Centre and edges Thicker at the center, as compared to its edges. Thinner at the center as compared to its edges.
Focal length Positive Negative
Image Real and inverted image. Virtual, erect and diminished image.
Objects Appear closer and larger. Appear smaller and farther.
Used to Correct hyperopia. Correct myopia.