How to Ace Optics Questions on Your Exam

Are you consistently losing points on Optics because of drawing ray diagrams without the focal point? If so, you're making the exact same error as 80% of your class.

The 3-Step Exam Strategy

1. Isolate: Extract the exact variables from the prompt.
2. Anticipate the Trap: The professor is betting you will end up drawing ray diagrams without the focal point. Know this before you write your first line.
3. Execute: Follow the algorithm. For instance: For a convex lens, parallel rays always converge at the focal point. If you draw the rays converging anywhere else, the image distance will be wrong..

If you get stuck, do not burn 15 minutes staring at it. Write down the formula, get partial credit, and move on.

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