An electron of mass 'm' and charge 'e' initially at rest gets accelera – McqOptions

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1.	An electron of mass 'm' and 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:
A.	\[\frac{-h}{eE{{t}^{2}}}\]
B.	\[\frac{-eht}{E}\]
C.	\[\frac{-mh}{eE{{t}^{2}}}\]
D.	\[\frac{-h}{eE}\]
Answer» B. \[\frac{-eht}{E}\]

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