Question

How do the coarse and fine focus knobs work on a bright field microscope?

a) Coarse focus is used for major adjustments in focus, while fine focus is for fine-tuning.
b) Coarse focus is used for fine-tuning, while fine focus is for major adjustments.
c) Coarse focus is used for side-to-side movement, while fine focus is for up and down.
d) Coarse focus is not necessary on a bright field microscope.

Answer 1

The coarse focus knob is used for major adjustments in focus, while the fine focus knob is used for fine-tuning the focus on a bright field microscope.

Step-by-step explanation:

How do the coarse and fine focus knobs work on a bright field microscope?

When using a bright field microscope, the coarse focus knob is responsible for major adjustments in focus, while the fine focus knob is used for fine-tuning the focus. The coarse focus knob is used for large-scale movements when using low and medium power objective lenses (such as 4x and 10x), while the fine focus knob is used for small-scale movements, especially when using high power objective lenses (such as 40x or 100x).