Question

When will you use a simple microscope and when, a compound microscope? Explain in detail how you will use them.

Answer 1

It is an instrument that is used to see those objects that are too small to be seen by the naked eye like small microorganisms that include bacteria, algae, fungi, etc.

Complete answer:
Simple microscope: A simple microscope is one that uses a single lens for magnification, such as a magnifying glass. The simple microscope has only one level of magnification which is due to the presence of single-lens only and is not adjustable.
A simple microscope works on the principle when an object is placed within its focus a virtual, erect, and magnified image is formed.
Uses
-A simple microscope is used for lower-class students while in research and higher studies compound microscope is used so that it can magnify small microorganisms.
-Its main function is to produce enlarged images of small objects.
- It has one biconvex lens with a short focal length and is used to produce an enlarged image of an object placed within its focal length.
Compound microscope: A compound microscope has mainly two sets of lenses: an eyepiece (ocular) and objective lenses.
Uses
-A compound microscope has several lenses with a higher level of magnification and is adjustable. It has an objective lens from 4X to 100X having high magnifying power.
-The eyepiece tube of a compound microscope holds the eyepiece while the nosepiece contains an objective lens and gives magnification.
-It is used to enlarge different biological structures.
-Some microscopes have a mechanical stage that allows slide movements.

Note: Antoine Van Leeuwenhoek was a Dutch scientist who is known as the pioneer of microscopy in the late 17th century and became the first man to make and use a real microscope. The microscope was first invented in 1950 by Zacharias Janssen.