How to Calculate Magnification of Microscope Objective Lens

What is the magnification of the objective lens if a student is viewing a specimen under the microscope at a total magnification of 400x and the oculars of the microscope are 10x?

a) 40x

b) 30x

c) 20x

Answer:

The magnification of the objective lens in use is 40x.

If a student is viewing a specimen under the microscope at a total magnification of 400x and the oculars of the microscope are 10x, then the magnification of the objective lens in use can be calculated by using the following formula:

Total magnification = Ocular magnification x Objective magnification

There are two types of lenses used in a microscope - the ocular lens (also known as the eyepiece lens) and the objective lens. The magnification of the specimen depends on the magnification of both these lenses.

To calculate the magnification of the objective lens, we need to know the total magnification of the microscope and the magnification of the ocular lens. In this case, the total magnification is 400x and the magnification of the ocular lens is 10x.

By substituting these values in the formula, we calculated the magnification of the objective lens as 40x. Therefore, the magnification of the objective lens in use is 40x.