Mirror and Lens Formulas Simplified

Front

Mirror Formula

Back

1/f = 1/v + 1/u

Front

Lens Formula

Back

1/f = 1/v - 1/u

Front

Focal Length (f)

Back

Distance from mirror/lens to focal point

Front

Object Distance (u)

Back

Distance from object to mirror/lens

Front

Image Distance (v)

Back

Distance from image to mirror/lens

Front

Concave Mirror

Back

Converging mirror

Front

Convex Mirror

Back

Diverging mirror

Front

Concave Lens

Back

Diverging lens

Front

Convex Lens

Back

Converging lens

Front

Real Image

Back

Formed when light converges