Topic 18 Flashcards
1
Q
What is a simple magnifier?
A
A converging lens, the object is placed just inside its focal point
Results in virtual image with magnification
2
Q
Equation to calculate Magnification
A
M = 0.25/f
Unit: Meters
3
Q
A simple magnifier usually has an M value of…
A
2-5 Meters
4
Q
Give the simple structure of a microscope
A
2 lenses: Objective and Ocular (Eyepiece)
5
Q
How does a microscope function?
A
The second lens magnifies the image, focusing it into the retina of the eye.
6
Q
What is optical tube length?
A
The distance between the focal points of the two lenses.
7
Q
Describe the magnification of the microscope
A
Limited by the resolution, dependent on light wavelengths
8
Q
Equation to calculate Microscope Magnification
A
Δx/f1f2
- x = near point of the eye*
- f = focus of the lenses*
