We wish to see inside an atom. Assuming the atom to have a diameter of 100 pm [1…
Physics · Class 12 · CBSE — Dual Nature of Radiation & Matter
We wish to see inside an atom. Assuming the atom to have a diameter of 100 pm [1 picometre (pm) = 10-12 m], this means that one must be able to resolve a width of, say 10 pm. If an electron microscope is used, the minimum electron energy required is about:
- 1.5 keV
- 15 keV
- 150 keV
- 1.5 MeV
Answer
(B) 15 keV
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