Question

based on the microscope shown in the lab lecture, which objectives would require placing oil on the slide in order to clearly visualize the sample?

Answer 1

Step-by-step explanation:

The high power (usually 40x or higher) objectives in a microscope typically require the use of oil to clearly visualize the sample. The oil helps to reduce the thickness of the air gap between the slide and the objective lens, which otherwise can cause chromatic aberrations and reduce image quality.