Which microscope objective lens provides the greatest field of view?

The objective lens that provides the greatest field of view is the one with the lowest magnification. In this case, the 4x objective lens has the lowest magnification power among the options listed. When using a lower magnification, the field of view increases, allowing the observer to see a larger area of the sample being examined.

This is particularly important in microscopy, as a larger field of view enables researchers to locate specific areas of interest more easily and to assess the overall organization of the sample before switching to higher magnifications for detailed observation. Higher magnification lenses, such as 10x, 40x, or 100x, focus more closely on smaller areas, thereby narrowing the field of view. Therefore, the 4x objective lens is optimal for achieving the greatest field of view.