* Low-power objective (LPO): This objective usually has a magnification of 4x or 10x. It provides a wide field of view and is used for initial observation and locating the specimen.

* High-power objective (HPO): This objective has a magnification of 40x or 100x. It provides a magnified view of the specimen and is used for detailed examination.

Note:

* The magnification of the objective lenses is always multiplied by the magnification of the eyepiece (ocular lens) to determine the total magnification of the microscope. For example, if the eyepiece magnification is 10x, the total magnification for the LPO (4x) would be 40x (4x * 10x) and the total magnification for the HPO (40x) would be 400x (40x * 10x).

* Some microscopes may have additional objective lenses with higher magnifications, such as 20x, 60x, or even 150x.

* The specific powers of the objectives may vary depending on the make and model of the microscope.

It's important to remember that higher magnification doesn't always mean a better image. The quality of the image depends on factors like the quality of the lenses, the lighting, and the preparation of the specimen.