An object is placed 25 cm in front of a thin lens and a real
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics
Problem
An object is placed 25 cm in front of a thin lens and a real, inverted image is obtained 50 cm from the lens on the opposite side. Calculate the focal length of the lens.
(a) −50cm
(b) +12.5cm
(c) +16.7cm
(d) −16.7cm