O Level Biology 21 Views 1 Answers

Sourav PanNovember 2, 2024
What is the formula of Magnification?
What is the formula of Magnification?
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Sourav PanMay 15, 2025
To calculate the total magnification of a microscope, you can use the following formula:
Magnification Formula
Total Magnification = Eyepiece Magnification × Objective Magnification
Explanation
- Eyepiece Magnification: This is typically a constant value, commonly 10x for most microscopes. It represents how much larger the image appears compared to the naked eye.
- Objective Magnification: This varies depending on the objective lens in use, which can be marked on the lens itself (e.g., 4x, 10x, 40x, 100x).
Example Calculation
If you are using a 10x eyepiece and a 40x objective lens, the total magnification would be calculated as follows:
Total Magnification=10×40=400Total Magnification=10×40=400
This means that the specimen will appear 400 times larger than its actual size.
Additional Considerations
For digital microscopes or when viewing images on a monitor, you may need to incorporate additional factors such as digital magnification and monitor size. The formula for on-screen magnification is:
Total On-Screen Magnification = Optical Magnification × Digital Magnification
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