Plane mirror image via reflected ray extensions

Steps:

• Trace the two divergent rays from object O striking the plane mirror.
• Apply the law of reflection: angle of incidence equals angle of reflection for each ray.
• Extend the reflected rays backward behind the mirror.
• Locate the image at the intersection point of these extensions.

Why B is correct:

• In plane mirrors, the virtual image forms where backward extensions of reflected rays intersect, per the reflection law.

Why the others are wrong:

• A: Lies in front of the mirror; plane mirror images are always virtual and behind.
• C: No intersection of ray extensions; violates image formation rule.
• D: Marks a reflection point on the mirror; image is not at the surface.

Final answer: B