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An electron of mass m with an initia...

An electron of mass m with an initial velocity ` vecV = v_(0) hati ( V_(0) gt 0 ) ` enters an electric field ` vecE =- E_(0) hati( E_(0) = " constant " gt 0) ` at t=0 . If `lamda _(0) ` is its broglie wavelength initially , then its de Broglie wavelength at time t is

A

`lamda _(0) t `

B

` lamda _(0) (1 + ( eE _(0))/(mV_(0))t)`

C

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

D

`lamda _(0) `

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