Question

what is value of convex and concave lens?​

Answer 1

Explanation:

CONVEX CONCAVE

This lens converges a straight beam of light. This lens diverges a straight beam of light.

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

Answer 2

Explanation:

Concave lens forms a diminished image of the object. Take the lenses and put the lenses on a printed book in such a way that you can see the printed letters clearly . If the letters of the book appear enlarged, it is a convex lens . If they appear diminished, it is concave lens.