Moseley plot for `k_(a)-` X-ray is shown. If moseley equation is given by `sqrt(f)=a(Z-b)` if constant a is given by `5xx10^(p)Hz^((1)/(2))` then `P` is

Answer

7

Explanation

`sqrt(f)=a(Z-b)`
`a="slope"=(0.5xx10^(9))/(10)=Hz^((1)/(2))`
`0.95xx10^(9)=5xx10^(7)(20-b)impliesb=1`