Lens ray diagram simulator

Move an object in front of a converging or diverging lens and see the three principal rays, where the image forms and whether it is real or virtual, upright or inverted.

Learn lenses properly

StudyAI writes clear notes on any topic you study, with practice quizzes, past-paper questions explained, and interactive models like this one in the notes.

Get free notes and a quiz on this
Free to start. No card needed.

Questions students ask

When does a convex lens make a virtual image?

When the object is closer to the lens than the focal point: the image is upright and magnified, as in a magnifying glass.

What is the lens formula?

1/f = 1/u + 1/v, with real distances positive. Magnification = v/u.

Free notes on lenses

More physics tools

Projectile motion simulator
Set the launch speed, angle and height and see the trajectory, range, maximum height and time of flight. Metri…
Velocity–time graph: acceleration and distance
Build a velocity-time graph and get the acceleration from the slope and the distance from the area. Metric or …
Simple pendulum simulator
Change the length, amplitude and planet and see the period of a pendulum, solved exactly for large swings.
Refraction and Snell's law simulator
Shine light into or out of water, glass or diamond: Snell's law, the critical angle and total internal reflect…
All interactive tools
Use this on your own site or class page

Copy this code. It is free to use, as long as the link stays.