A) The wavelength of electrons as wave is much larger than that of photons, hence resolution is much better.
B) The wavelength of electrons as wave is much smaller than that of photons, hence resolution is much better.
C) Electron as wave wave is much brighter than normal light and hence resolution is much better.
D) Speed of electron as wave wave is greater than the speed of light and hence offers better resolution.
Correct Answer: B
Solution :
Option [b] is correct. Explanation: Using visible light, the best resolution that can be achieved by microscopes is about ~200 nm. The wavelength of electrons as wave is much smaller than that of photons as wave (2.5 pm at 200 ke V). Thus if electron as wave is used to illuminate the sample, the resolution of an electron microscope theoretically becomes unlimited. Practically, the resolution is limited to ~0.1 nm,
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