An electron of mass m with an initial ve...

An electron of mass m with an initial velocity `vec(V) = V_(0)hat(i) (V_(0) gt 0)` enters an electric field `vec(E) = -E_(0)hat(i) (E_(0) = "constant" gt 0)`. If `lambda_(0)` is its de Broglie wavelength initially, then its de Broglie wavelength at time t is

`lambda_(0)` t

`lambda_(0)(1 + (eE_(0))/(mV_(0))t)`

`(lambda_(0))/((1 + (eE_(0))/(mV_(0))t))`

`lambda_(0)`

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