Write magnification relation in terms of you and v for convex lens and concave mirror?

Answer 1

Convex is () and makes objects appear larger.

Concave is )( and makes objects appear smaller. The side rear-view mirrors on cars have concave mirrors, hence, "Object are closer than they appear."

Easy way to remember is that a cave is like a hole in the ground, so something is concave if it gets smaller towards the center.

Answer 2

For a convex lens, the magnification relation is given by ( M = \frac{v}{u} ), where ( M ) is the magnification, ( v ) is the image distance, and ( u ) is the object distance.

For a concave mirror, the magnification relation is given by ( M = \frac{-v}{u} ), where ( M ) is the magnification, ( v ) is the image distance, and ( u ) is the object distance.