A concave mirror produces a real image that is twice the height of the object

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

Problem

A concave mirror produces a real image that is twice the height of the object. The image forms

50\,\text{cm}

in front of the mirror along the principal axis. What is the focal length of the mirror? (a)

f = -16.7\,\text{cm}

(b)

f = +25\,\text{cm}

(c)

f = +16.7\,\text{cm}

(d)

f = +33.3\,\text{cm}