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An electron of mass m,when accelerated t...

An electron of mass m,when accelerated through a potensital difference eV,has de Broglie wavelength `lambda`.the de-Broglie waelength associated with a proton of mass M and acceleared through the same potential differencee will be

A

`lambdasqrt(M//m)`

B

`lambda sqrt((m//M))`

C

`lambdaM//m`

D

`lambda m // M`.

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