Which equation correctly relates the object distance

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics

Problem

Which equation correctly relates the object distance sos_o, the image distance sis_i, and the focal length ff for any thin lens? (a) 1so=1f+1si\dfrac{1}{s_o}=\dfrac{1}{f}+\dfrac{1}{s_i} (b) 1si−1so=1f\dfrac{1}{s_i}-\dfrac{1}{s_o}=\dfrac{1}{f} (c) 1si+1so=1f\dfrac{1}{s_i}+\dfrac{1}{s_o}=\dfrac{1}{f} (d) 1si+1so=2f\dfrac{1}{s_i}+\dfrac{1}{s_o}=\dfrac{2}{f}

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