Question

What is the deep difference between concave and convex?

Where is polished surface?
Where is reflecting surface?

Which forms real image?
Which forms virtual image?

And at the end please show a image of both lenses

No Scam
I am serious this time!!!​

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.

Answer 2

Answer:

concave lens : concave or divergent lenses are those which are thin at the centre and thick at the edges .

convex lens : convex or convergent lens are those which are thick at the centre and thin at the edges.

reflecting surface : from where the reflection takes place

polishing surface : the surface which is silver coated.

plane mirror , convex mirror and diverging lens form virtual image.

converging lens produce both real and virtual images .