MICROANATOMY

Detailed explanation-1: -In focusing samples under the high power objective, the samples need to be in a very short distance with the objective lens. What knob must be used to avoid breakage of glass slide while focusing the sample? base knob.

Detailed explanation-2: -(9) If you wish to view a specimen under high power, first make sure that the object is in focus under low power and centered in the field, then rotate the high power objective into place while visually checking to see that the tip of the objective will clear the slide.

Detailed explanation-3: -The purpose of the condenser lens is to focus or condense the light onto the specimen. The higher power objective lenses have very tiny diameters and require concentrated light to work properly. By using a condenser lens you will increase both the illumination and resolution.