Question

what is image and concave lense

Answer 1

Physics An optically formed duplicate, counterpart, or other representative reproduction of an object, especially an optical reproduction formed by a lens or mirror.


concave lens - those lens which is middle at the edge and thinner at the middle.

Answer 2

Hey,

Appearance of an object is called Image.

The spherical lense in which central portion is thinner than its edges is called concave lense