Question

convex and concave lens...
please explain​

Answer 1

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.

Answer 2

CONCAVE LENS :-

1. It is called diverging lens.
2. This lens is thinner in the center than at its edges.
3. The principal focus is virtual.
4. The focal length is negative.
5. This lens is used to correct myopia.

CONVEX LENS :-

1. it is called converging lens.
2. This lens is thicker at the centre than at its edges.
3. The principal focus is real.
4. The Focal length is Positive.
5. This lens Can be used to correct hypermetropia.

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