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An alpha - particle after passing throu...

An `alpha` - particle after passing through a potential difference of V volts collides with a nucleus . If the atomic number of the nucleus is Z then the distance of closest approach of `alpha` – particle to the nucleus will be

A

`14.4(Z)/(V)Å`

B

`14.4(Z)/(V)m`

C

`14.4(Z)/(V)cm`

D

all of these

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