The radius of a nucleus of a mass number `A` is directly proportional to.

Options

A. `A^(3)`
B. `A`
C. `A^(2//3)`
D. `A^(1//3)`

Answer

d

Explanation

Radius of nucleus, `R=R_(0)A^(1//3).` where, `R_(0)` is a constant and A is the mass number.
`R_(Cu)=(1.2xx10^(-15))(64)^(1//3)`
`=(1.2xx10^(-15))xx(4)^(1//3)`
`=4.8xx10^(-15)m=4.8fm`