An electron of mass 'm' and charge 'w' 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
−heEt2
−ehtE
−mheEt2
heE
A
heE
B
−heEt2
C
−ehtE
D
−mheEt2
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