Physics

Problem

In the derivation of the thin convex lens formula, one arrives at the relation

u(v - f) = fv

using the Cartesian sign convention. Which of the following lens equations is obtained after simplifying this relation? a)

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

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

\dfrac{1}{v}+\dfrac{1}{u}=\dfrac{1}{f}

\dfrac{1}{v}+\dfrac{1}{u}=-\dfrac{1}{f}