Physics

Problem

Select the correct mathematical form of the thin lens formula when measurements follow the Cartesian sign convention. a)

\displaystyle \frac{1}{f}=\frac{u+v}{uv}

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

\displaystyle \frac{1}{f}=\frac{1}{v}+\frac{1}{u}

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