Question

specimen. do not use the coarse adjustment knob on high power (40x), it will crack your slide. color this knob pink. the fine adjustment knob (d) is also for focusing when using the high - power objective. color this knob tan. 1. what two structures on the microscope will you use to focus on your specimen? 2. why should you never use the coarse adjustment knob on high power? 3. when do you use the fine adjustment knob? 4. our microscopes have three objectives. what are their powers? 5. what is the magnification of the ocular lens? 6. what is the shortest objective called? 7. how do you switch objectives? 8. which structure controls how much light passes through the specimen? 9. how should you carry the microscope? 10. how can you prevent your slide from slipping on the stage?

Explanation:

1. The coarse and fine adjustment knobs are used for focusing.
2. Using the coarse adjustment knob on high - power can damage the slide or microscope.
3. The fine adjustment knob is used for focusing when using the high - power objective.
4. Common microscope objectives have powers like 4X, 10X, 40X (but specific values may vary).
5. The magnification of the ocular lens is usually 10X (but can vary).
6. The shortest objective is often the low - power objective.
7. Objectives are switched by rotating the nosepiece.
8. The diaphragm controls the amount of light passing through the specimen.
9. The microscope should be carried with one hand on the arm and one hand under the base.
10. Using stage clips can prevent the slide from slipping on the stage.

Answer:

1. Coarse adjustment knob, fine adjustment knob
2. It will damage the slide or microscope.
3. When using the high - power objective.
4. Typically 4X, 10X, 40X (values may vary)
5. Usually 10X (can vary)
6. Low - power objective
7. Rotate the nosepiece.
8. Diaphragm
9. One hand on the arm, one hand under the base.
10. Use stage clips.