Physics · 2023
JEE Main · 25 January 2023, Shift 1 · Q18
Electron beam used in an electron microscope, when accelerated by a voltage of 20 kV, has a de-Broglie wavelength of λ_o. If the voltage is increased…
Electron beam used in an electron microscope, when accelerated by a voltage of $\displaystyle 20$ kV , has a de-Broglie wavelength of $\displaystyle \lambda_o$. If the voltage is increased to $\displaystyle 40$ kV , then the de-Broglie wavelength associated with the electron beam would be:
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle \frac{\lambda_0}{\sqrt{2}}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.