12. The ______moves the tube and lower power objective (LPO) lens closer or farther away from the stage to view the image of the specimen. Turning the coarse adjustment knob upwards and downwards raises and lowers the body tube with the objectives, respectively. It also focuses or brings out the object to be observed.
a. REVOLVING NOSEPIECE c. COARSE ADJUSTMENT KNOB b. FINE ADJUSTMENT KNOB d. OBJECTIVE LENS
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Answer:
c. COARSE ADJUSTMENT KNOB
Explanation:
The coarse adjustment knob located on the arm of the microscope moves the stage up and down to bring the specimen into focus.