Which mineral test is shown in the image?
public domain
specific gravity
luster
cleavage
hardness

Hardness

Explanation:

The hardness test consists of trying to enrich a mineral with an object and observe if the risk can be visualized, that is, if the mineral is scratched.

As we can see in the image above, there is an object that an individual is imposing on the mineral, we can consider that this is an attempt to scratch the mineral to observe its hardness. Only an object harder than a mineral can scratch it.

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)