Question

multiple - choice question
what focus knob do you use first to find your specimen?
fine focus
course focus
rewatch
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Explanation:

When using a microscope to find a specimen, the coarse - focus knob is used first. It makes larger adjustments to the focus, allowing for a quicker initial search for the specimen. The fine - focus knob is used later for more precise focusing once the specimen is in view.

Answer:

B. Course Focus