Physics · 2019
JEE Main · 10 January 2019, Shift 1 · Q25
In an electron microscope, the resolution that can be achieved is of the order of the wavelength of electrons used. To resolve a width of 7.5 ×…
In an electron microscope, the resolution that can be achieved is of the order of the wavelength of electrons used. To resolve a width of $\displaystyle 7.5 \times 10^{-12} \mathrm{~m}$, the minimum electron energy required is close to :
Official answer
(2)
$\displaystyle 25$ keV
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.