Question

what is different and similarities between concave and convex mirror and lens​

Answer 1

Answer:

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 which is 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.

Concave Vs Convex

Appearance A concave lens is thinner in the middle and thicker at the edges. A convex lens is thicker in the middle and thinner at the edges.

Also known as It is also known as Diverging Lens It is also known as Converging Lens

Application Used in glasses, some telescopes, spy holes in the doors, etc. It is also used for the correction of the problem in short sight Used in the camera, focus sunlight, overhead projector, projector microscope, simple telescope, magnifying glasses, etc. It is also used for the correction of the problem in long sight.

Focal Length Negative Focal Length Positive Focal Length

Incident Rays It diverges the incident rays away from the principal axis. It converges the incident rays towards the principal axis.

Type of Image Formed The image formed is an upright, virtual, and smaller size than the object. The position of the image formed is in between the lens and the object regardless of the object’s position The image formed is inverted, real and smaller than the object when the object is placed at focus. The image formed is the inverted, real, and the same size as the object when the object is placed at 2F. The image formed is inverted, real and larger than the object when the object is placed between 2F and F. No image is formed when the object is placed at focus (F). The image formed is upright, virtual, and larger than the object when the object is placed on the same side of the lens.

Answer 2

Answer:

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A convex lens acts a lot like a concave mirror. Both converge parallel rays to a focal point, have positive focal lengths, and form images with similar characteristics. A concave lens acts a lot like a convex mirror. Concave mirrors form real and inverted images except when the object is between pole and focus.