What happens when two magnifying glasses are put together?

It depends on how you place the two lenses: "If the distance between the two lenses is greater than the sum of their focal lengths, which is equivalent to the galileo telescope, the angle of view of the object can be increased, that is, it looks very close;

If the distance is very close, and the object is also very close (1 times the focal length), it should be magnified backward, but it may not be clear because the focal length may be out of alignment.

It depends on the position of the two magnifying glasses. There are three distances between the first magnifying glass and the object (within one focal length, between one focal length and two focal lengths, and further), and there are three distances between the second magnifying glass and the first magnifying glass (as above), which are determined by their positions.

I hope it helps you. If you are satisfied, please adopt it! ~ thank you