Drag the yellow object left and right and watch the rays trace and the image form. Switch between mirrors and lenses!
👆 Drag the yellow arrow along the line. · solid = real image · dashed = virtual image
Ray 1 (parallel → focus)Ray 2 (through centre)
Image is
Real
Orientation
Inverted
Size
Diminished
Image distance
30 cm
🧠 The Big Idea
Concave mirror & convex lens can make real images (caught on a screen) — usually inverted. Bring the object very close (inside F) → image turns virtual, erect & magnified (that's a shaving mirror / magnifying glass! 🔍).
Convex mirror & concave lensalways give a virtual, erect, diminished image — a wide view (car rear-view mirror 🚗).
🎯 Try this: With the concave mirror, drag the object from far away to very close. Watch the image flip from small & upside-down → huge → and then jump behind the mirror as an upright, magnified virtual image. That single move is half your optics chapter! 🎉