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 :
${{ - h} \over {\left| e \right|Et}}$
${{ - h} \over {\left| e \right|E\sqrt t }}$
${{ - h} \over {\left| e \right|E{t^2}}}$
${{\left| e \right|Et} \over h}$
Solution
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