What is simple and compound microscope?
A simple microscope employs a concave mirror. A compound microscope employs a plane mirror at one side and a concave mirror at the other. It contains only one adjustment screw to move the limb up and down for focusing on the object.
How is compound microscope different from simple microscope?
A magnifying instrument that uses two types of lens to magnify an object with different zoom levels of magnification is called a compound microscope. A magnifying instrument that uses only one lens to magnify objects is called a Simple microscope. …
How do you draw bacteria step by step?
Step-by-Step Instructions for Drawing Bacteria
- Start by outlining the basic shape of the bacterium.
- Draw two long curved lines extending from the cross-section.
- Draw a long curved line that doubles back and forth over itself.
- Continue the curved line of the DNA and double it back upon itself to complete the outline.
Why is a mirror fixed in a microscope?
Answer: Mirror mounted in a microscope to reflect light on the substance to be observed. The portion fixed below the stage in the microscope is to reflect light on the substance to be examined.
What are the parts of the microscope?
These parts include:
- Eyepiece – also known as the ocular.
- Eyepiece tube – it’s the eyepiece holder.
- Objective lenses – These are the major lenses used for specimen visualization.
- Nose piece – also known as the revolving turret.
- The Adjustment knobs – These are knobs that are used to focus the microscope.
Which mirror is used in simple microscope?
Difference Between Simple And Compound Microscope
| Characteristics | Simple microscope | Compound microscope |
|---|---|---|
| Mirror | Concave reflecting type is used | Plane on one side and the other side is concave |
What is basic microscope principle?
Principle of Simple Microscope A simple microscope works on the principle that when a tiny object is placed within its focus, a virtual, erect and magnified image of the object is formed at the least distance of distinct vision from the eye held close to the lens.
What is the principle of compound microscope?
The compound microscopes are works on the principle that when a tiny specimen to be magnified is placed just beyond the focus of its objective lens, a virtual, inverted and highly magnified image of the object are formed at the least distance of distinct vision from the eye held close to the eyepiece.
Why is compound microscope preferred over a simple microscope?
The advantages of using compound microscope over a simple microscope are: (i) High magnification is achieved, since it uses two lenses instead of one. (ii) It comes with its own light source. (iii) It is relatively small in size; easy to use and simple to handle.
What is bacteriophage with diagram?
A bacteriophage is a virus that infects a bacterial cell and reproduces inside it. They vary a lot in their shape and genetic material. A bacteriophage may contain DNA or RNA. The genes range from four to several thousand. Their capsid can be isohedral, filamentous, or head-tail in shape.