The resolving power of electric microscope is____________?
Correct answer: B. 0.2 nm
- A. 0.2 mm
- B. 0.2 nm
- C. 0.2 m
- D. none of these
Explanation
An electron microscope uses electrons with much shorter wavelengths than visible light, giving a resolving power of about 0.2 nm. Students often choose 0.2 mm by confusing the nanometre scale of cell ultrastructure with the much larger millimetre scale.
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