2. What is the typical magnification of an ocular lens? What other magnifications are possible? 3. What are the magnification abilities of each of the objective lenses? Scanning (small lens), red ring= Low-power (medium lens), yellow ring= High-power (large lens), blue ring= Oil immersion (largest lens), white ring 4. What is the total magnification with each objective? Scanning (small lens), red ring= Low-power (medium lens), yellow ring High-power (large lens), blue ring= Oil immersion (largest lens), white ring- 5. Why do you use immersion oil with 100X objective lens? 6. What is the total magnification of a sample with an ocular lens power of 10X and using a 40X objective lens? 7. What is the function of the diaphragm? 8. What is the function of the condenser (abbe condenser)? 9. When looking at a slide, you should always begin by using the objective lens. (4x, 10x or 40x)