Exam-style question
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What limits the resolution of an electron microscope?.
- A.The quality of the electron source
- B.The electron beam current
- C.The wavelength of the electrons
- D.The type of sample being analyzed
Model answer
What a good answer should say
- The wavelength of the electrons
Explanation
Why this works
The resolution of an electron microscope is limited by the wavelength of the electrons used in imaging. Shorter wavelengths lead to better resolution, as per the principles of wave-particle duality.
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