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3 results for “focal length”

Formulae (3)

\frac{1}{f} = \frac{1}{v} - \frac{1}{u}

Relates focal length to object and image distances for a thin lens.

\frac{1}{f} = \frac{1}{d_o} + \frac{1}{d_i}

Relates focal length to object and image distances.

\frac{1}{f} = \frac{1}{d_o} + \frac{1}{d_i}

Focal length relation for curved mirrors.