Asked by Ja'darrius Keaton on Jul 31, 2024
Verified
Why is it important to use only the fine adjustment knob when using the high-power or oil immersion lenses?
A) Using the coarse adjustment knob might crack the coverslip or slide, due to the close working distance.
B) You will not be able to focus on the specimen with the coarse adjustment knob.
C) There will not be enough light on the specimen to see it, if the coarse adjustment knob is used.
D) The condenser does not function when using the coarse adjustment knob.
E) The iris diaphragm does not function when using the coarse adjustment knob.
Coarse Adjustment Knob
The coarse adjustment knob is a control on a microscope used to bring the specimen into general focus by moving the stage up or down.
Fine Adjustment Knob
A control on a microscope used to make small adjustments in focus, refining the clarity and detail of the viewed specimen.
Coverslip
A thin piece of glass or plastic used to cover specimens on a microscope slide, protecting the sample and lens.
- Gain insight into the basic concepts of magnification, enhancing specimen visibility, and techniques for focusing.
Verified Answer
SH
Sammana HapuarachchiAug 03, 2024
Final Answer :
A
Explanation :
Using the coarse adjustment knob might apply too much pressure and cause the coverslip or slide to crack or break, especially when working with high-power or oil immersion lenses that have a close working distance. The fine adjustment knob allows for slow and precise movements to achieve focus without applying excessive force on the slide.
Learning Objectives
- Gain insight into the basic concepts of magnification, enhancing specimen visibility, and techniques for focusing.