At a magnification of 100 times, we can see 15 cells in a row side by side. What is the length of each cell

At a magnification of 100 times, we can see 15 cells in a row side by side. What is the length of each cell

A hundredfold means that the length and width are magnified 100 times
Generally, the actual size of the eyepiece ruler is 0.1 mm, so that the length of each of the 15 cells side by side should be 15 μ m (one millionth of a meter)
If not, check the measurement method in the microscope manual

16 cells can be seen under a microscope with a magnification of 100, but how many cells can be seen under a microscope with a magnification of 400?
16 cells can be seen under a microscope magnified 100 times, but how many cells can be seen under a microscope magnified 400 times?

1. The magnification is linear, that is to say, the length and width of the cell are magnified by 100 times under the microscope of 100 times, so the area of the cell is magnified by 10000 times, 400 times and 160000 times under the microscope of North. The field of view of the microscope of 100 times is the same as that of the microscope of 400 times, so

The magnification of a small object is 50 times that of a microscope. Here, the magnification of 50 times refers to the area, length or width of object a of the small object

Choose B, the magnification of the microscope refers to the length and width of the magnified object