In an electron microscope, the resolution thatcan be achieved is of the order of the wavelength of electrons used. To resolve a width of 7.5 X 10-12 m, the minimum electron energy required is close to:
500 keV
100 keV
1keV
25 keV
De - Broglie wavelength -
- wherein
500 keV
Option 2)100 keV
Option 3)1keV
Option 4)25 keV
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