The magnifying power of a converging lens used as a simple microscope is (1+Df). A compound microscope is a combination of two such converging lenses. Why don't we have magnifying power (1+Dfo)(1+Dfe)? In other words, why can the objective not be treated as a simple microscope but the eyepiece can?
Answers
The objective not be treated as a simple microscope but the eyepiece can because its magnification power cannot be expressed as it is expressed for simple microscope.
Explanation:
Converging lens:
It is used to magnify the target in a single microscope.
We use eyepieces in a compound microscope to serve this purpose.
But the objective lens is used to shape the object's expanded , actual , and inverted image at a distance less than the eye piece's focal length.
Therefore , for a simple microscope , its magnification power cannot be represented in such a way as to explain it.
In both simple and compound microscope, object is moved closer to the center, the image gets more and more magnified.
Explanation:
- In a simple microscope, the converging lens is used to magnify the object.
- It is done by the eyepiece in a compound microscope.
- But the purpose of the objective lens is the same.
- Because it is form an enlarged,real and inverted image of the object at a distance less than the focal length of the eyepiece.
- So, its magnification power cannot be expressed in a way it is expressed for a simple microscope.
- Also we see that whatever is the position of the object between the focus and the center.
- Because, both the image and the object subtend the same angle at the eye of an observer.
To Learn More...
1.The magnifying power of a converging lens used as a simple microscope is 1+D/f. A compound microscope is a combination of two such converging lenses. Why don’t we have magnifying power( 1+D/ fo) (1+D/fe)?In other words, why can the objective not be treated as a simple microscope but the eyepiece can?
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