NEET PG DENTAL EXAM

Detailed explanation-1: -Coarse Adjustment Knob-The coarse adjustment knob located on the arm of the microscope moves the stage up and down to bring the specimen into focus. The gearing mechanism of the adjustment produces a large vertical movement of the stage with only a partial revolution of the knob.

Detailed explanation-2: -Fine focus Fine focus moves the stage in smaller increments to provide a clear view of the specimen.

Detailed explanation-3: -It’s important to use the coarse knob first, as this moves the stage containing the slide more quickly to bring the specimen into focus. It could take a much longer time to achieve the degree of focus you want if you only used the fine-focus knob.

Detailed explanation-4: -Focusing knobs: located on both sides of the microscope. The larger, inner coarse adjustment knob moves the stage up and down much faster and farther than the smaller, outer fine adjustment knob. The coarse adjustment knob is used ONLY with the low power (4X, 10X) objectives.