PHYSICS · Single correct · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics
Problem
A concave mirror has a focal length of 12 cm. An object is placed 18 cm in front of the mirror on its principal axis. Where will the image be formed?
(a) 7.2cm in front of the mirror (real)
(b) 36cm behind the mirror (virtual)
(c) 36cm in front of the mirror (real)
(d) 24cm in front of the mirror (real)