How many times is the eyepiece 10x and the objective lens 40x magnified?

Eyepiece 10x objective lens 40x, magnified 400 times.

The magnification of microscope is equal to the product of the magnification of eyepiece and objective lens, and the magnification of microscope is equal to the magnification of eyepiece × objective lens. Enlarges the length or width of the object image. The magnification of the eyepiece is 10 times, and that of the objective is 40 times, so the magnification of the microscope is = 10×40=400 times.

The difference between eyepiece and objective lens

1, different definitions

The eyepiece is a visual optical device used to observe the image formed by the front optical system, and it is a part of visual optical instruments such as telescopes and microscopes. The eyepiece consists of two parts. The lens at the upper end is called eye lens, which plays a magnifying role, and the lens at the lower end is called convergent lens or field lens, which makes the image brightness uniform.

The objective lens is a lens group composed of several lenses. The purpose of combined use is to overcome the imaging defects of a single lens and improve the optical quality of the objective lens. The magnifying effect of microscope mainly depends on the objective lens. The quality of objective lens directly affects the imaging quality of microscope. It is the main component that determines the resolution and image clarity of microscope, so the correction of objective lens is very important.

2. Different characteristics

The eyepiece is not threaded, and the objective lens is threaded.

3. The relationship between length and magnification is different.

The longer the eyepiece, the smaller the magnification; The shorter the eyepiece, the greater the magnification? The longer the objective lens, the greater the magnification; The shorter the objective lens, the smaller the magnification.

4. Different positions

The eyepiece is installed at the upper end of the lens barrel and is a lens close to people's eyes. The objective lens is installed on the converter at the lower end of the lens barrel, close to the lens for observing the object.

5. Different installation methods

The eyepiece is usually inserted directly into the lens barrel, and the objective lens is mostly screwed on.