The specific charge of a proton is `9.6xx10^(7)"C kg"^(-1)`.
The specific charge of an alpha particle will be

Options

A. `9.6xx10^(7)"C "kg^(-1)`
B. `19.2xx10^(7)"C "kg^(-1)`
C. `4.8xx10^(7)" C "kg^(-1)`
D. `2.4xx10^(7)" C "kg^(-1)`.

Answer

C

Explanation

Specific charge of proton`=((e)/(m))_(p)=9.6xx10^(-7)Ckg^(-1)`
specific charge on `alpha`-particle,
`((q)/(m))_(alpha)=(2e)/(m)=(1)/(2)(e)/(mm)_(p)=(1)/(2)xx9.6xx10^7`
`=4.8xx10^(7)Ckg^(-1)`