A proton when accelerated through a p.d ...

A proton when accelerated through a `p.d` of `V` volt has wavelength `lambda` associated with it. An electron to have the same `lambda` must be accelerated through a `p.d` of

`V/8` volt

`4V` volt

`2V` volt

`1838V` volt

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The correct Answer is:

`V_(1)xxq_(1)xxm_(1)=V_(2)xxq_(2)xxm_(2)`

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