Question

need and importance of rules of convex lens​

Answer 1

Answer:

Convex lenses are used in microscopes, magnifying glasses and eyeglasses. They are also used in the cameras to create real images of objects present at a distance. The nature of the images depends on the way these lenses are used.

Hope it helps

Answer 2

Answer:

CONVEX  

This lens converges a straight beam of light.  

This lens is thicker at the centre and gets thinner as we move towards the edges.