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How to play

Learn about concave and convex lenses as you play this game. Understand the various ray diagrams for different object positions using simulations. Click on object positions – at infinity, beyond 2F, at 2F, between 2f and F and between F and O and observe the animated ray diagram showing position of the image.
Understand the lens formula and its application in solving numerical problems.
Observe the application of concave and convex lenses as corrective lenses in solving eye problems like myopia and hypermetropia.
Play the game by choosing the correct key slot to make its image open the door. Jump on the correct answer stones and pass through all the doors. Finally give correct answers to the numerical questions and finish the game.