Physics · 2020
JEE Main · 9 January 2020, Shift 2 · Q18
An electron of mass m and magnitude of charge e initially at rest gets accelerated by a constant electric field E. The rate of change of de-Broglie…
An electron of mass m and magnitude of charge |e| initially at rest gets accelerated by a constant electric field E. The rate of change of de-Broglie wavelength of this electron at time t ignoring relativistic effects is :
Official answer
(1)
$\displaystyle \frac{-\mathrm{h}}{|\mathrm{e}| \mathrm{Et}^2}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.