Question

It can be argued that a flat mirror has an infinite focal length. If so, where does it form an image? That is, how are di and do related?

a) The image distance (di) is equal to the object distance (do).

b) The image distance (di) is infinite.

c) The image distance (di) is zero.

d) The image distance (di) is negative and equal to the object distance (do).

Answer 1

A flat mirror forms a virtual image that is equal in distance to the object from the mirror.

Step-by-step explanation:

A flat mirror does indeed have an infinite focal length. This means that the image formed by a flat mirror is virtual, erect, and at the same distance as the object from the mirror. In other words, the image distance (di) is equal to the object distance (do). So, the correct answer is (a) The image distance (di) is equal to the object distance (do).