Exam-style question
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What is a key feature of an electron microscope that distinguishes it from an optical microscope?.
- A.Uses electrons instead of light
- B.Has a larger field of view
- C.Can only observe living specimens
- D.Uses lenses to focus light
Model answer
What a good answer should say
- Uses electrons instead of light
Explanation
Why this works
An electron microscope uses electrons to create an image, while an optical microscope uses visible light. This key difference allows electron microscopes to achieve much higher resolutions.
Electron microscopes are particularly useful for observing very small structures at the nanoscale, whereas optical microscopes are limited by the wavelength of light and are better suited for larger specimens.
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