See real-time ray diagrams for lenses and mirrors. Computes image distance, magnification and nature. For JEE, NEET, AP.

About the Ray Optics Lab

This free interactive tool helps you learn the concept visually. See real-time ray diagrams for lenses and mirrors. Computes image distance, magnification and nature. For JEE, NEET, AP.

Frequently Asked Questions

Is the Ray Optics Lab free to use?

Yes — it is completely free and runs online in your browser. No sign-up or download needed.

Who is the Ray Optics Lab for?

It is built for Class 11 and 12 students and JEE/NEET aspirants, and also works for SAT, AP and IB.

Do I need to install anything?

No — it runs directly in your browser on phone, tablet or laptop.

Want full notes too? Explore our Class 11 and Class 12 PCM notes.


This free online ray optics lab helps Class 11 and 12 students visualise and understand ray optics quickly and clearly. Widely used for CBSE, ICSE, JEE and NEET preparation and by students worldwide — interactive, no sign-up, and works on any device.

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