A thin concave lens has a focal length of

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics

Problem

-18\,\text{cm}

. A small object is positioned

30\,\text{cm}

in front of the lens on the incident-light side. Calculate the image distance

s_i

produced by the lens, including its sign.