A thin convex lens of focal length is placed in front of a plane mirror

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

Problem

A thin convex lens of focal length is placed in front of a plane mirror. An object is placed at a distance

x

from the lens, not between the lens and mirror, so that its final image coincides with itself. Then, the value of

x

is (1)

15\,\text{cm}

(2)

30\,\text{cm}

(3)

60\,\text{cm}

(4) Insufficient data