Question

A student wants to view cells under the compound microscope at a total magnification of 400X. If the eyepiece is 10X, which of the following objective lenses should be used?

Answer 1

To achieve a total magnification of 400X with an eyepiece magnification of 10X, an objective lens with a magnification of 40 should be used.

Step-by-step explanation:

In order to achieve a total magnification of 400X, we need to determine which objective lens to use. Given that the eyepiece has a magnification of 10X, we can use the formula:

Total Magnification = Objective Lens Magnification × Eyepiece Magnification

Substituting the known values:

400X = Objective Lens Magnification × 10X

Simplifying the equation:

Objective Lens Magnification = 400X ÷ 10X = 40

Therefore, the objective lens with a magnification of 40 should be used to view the cells under the compound microscope.