Question

explain the construction and working of compound microscope and derive its magnifying power ​

Answer 1

Answer:

compound light microscope is a microscope with more than one lens and its own light source. In this type of microscope, there are ocular lenses in the binocular eyepieces and objective lenses in a rotating nosepiece closer to the specimen.

Although sometimes found as monocular with one ocular lens, the compound binocular microscope is more commonly used today.

The first light microscope dates back to 1595, when Zacharias Jansen created a compound microscope that used collapsing tubes and produced magnifications up to 9X.



Microscopes have come a long way since then—today's strongest compound microscopes have magnifying powers of 1,000 to 2,000X.

Because it contains its own light source in its base, a compound light microscope is also considered a bright field microscope.

Bright field microscopy simply means that the specimen is lit from below and viewed from above.

With bright field illumination, the sample’s contrast comes from its absorption of the light, as opposed to dark field illumination where the contrast comes from the sample scattering the light.

Magnification

In order to ascertain the total magnification when viewing an image with a compound light microscope, take the power of the objective lens which is at 4x, 10x or 40x and multiply it by the power of the eyepiece which is typically 10x.

Therefore, a 10x eyepiece used with a 40X objective lens, will produce a magnification of 400X. The naked eye can now view the specimen at a magnification 400 times greater and so microscopic details are revealed. More on objective lenses here.

Magnification is the ability to view an object as larger. A good image is obtained when the amount of specimen detail is also increased. Magnification alone will not achieve this.

Answer 2

Answer:

Construction-A compound microscope consists of two convex lenses. The lens towards the object is called an eyepiece. The lenses are so close that the focal length of the objective lens is small compared to the eyepiece. This combination of lens forms a magnified lenses forms a magnified image of object.

Explanation:

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