Write down the magnification formula for a lens in terms of object distance and image distance. How does this magnification formula for a lens differ from the corresponding formula for a mirror?

Question

Philoid · Accepted Answer

Magnification (m) formula for a lens in terms of object distance (u) and image distance (v) is:

Magnification formula for a mirror in terms of object distance (u) and image distance (v) is:

Magnification formula for a mirror has a minus sign (-) but the magnification formula for a lens has no minus sign.