OSMT (Ontario Society of Medical Technologists) Practice Exam

What are the most objectives usually set to on a microscope?

1. X 10, X 50, X 100

2. X 10, X 40, X 100

3. X 20, X 40, X 80

4. X 100, X 400, X 800

The correct answer is: X 10, X 40, X 100

The correct choice highlights the most commonly used objectives on a microscope, particularly in the context of laboratory settings such as those encountered by medical technologists. The 10x objective is typically used for initial observations and scanning specimens due to its wider field of view. The 40x objective provides a higher magnification and is often employed for examining details in unstained and stained specimens. Finally, the 100x objective is an oil immersion lens that offers the highest magnification, allowing for detailed observations of very small structures, such as cellular components. The other options either include magnifications that are less standard in commonly used microscopes or exceed typical laboratory practices with objectives that might be used in more specialized contexts. Understanding the common objectives helps in selecting the appropriate lens for various microscopic examinations, facilitating accurate observations and analyses in medical diagnostics.