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de Broglie wavelength of an electron aft...

de Broglie wavelength of an electron after being accelerated by a potential difference of V volt from rest is :

A

`lamda=(1.23)/sqrt(m)`

B

`lamda=(1.23)/sqrt(h)m`

C

`lamda=(1.23)/sqrt(V)nm`

D

`lamda=(1.23)/(V)`

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