Physics/optics — what a mirror always does A mirror always _____. Select the phenomenon that necessarily occurs with mirrors.

Concept Mirrors form images by reflection of light at their surfaces.

Option check

• Retracts — not a physical optics term here.
• Distorts — may occur (curved mirrors), but not essential.
• Refracts — bending through a medium; not what defines a mirror.
• Reflects — defining action of a mirror; necessary.

Final Answer Reflects.