7. Choose the correct answer The mass attenuation coefficient of the X-ray radiation can be expressed as follows: mu _(n)=klambda ^3Z^3 mu _(w)=klambda ^2Z^2 mu _(m)=klambda ^4Z^2

The correct answer is: Explanation:The mass attenuation coefficient ( ) is a measure of the probability that a photon will be absorbed or scattered per unit distance traveled in a medium. It is typically expressed in units of cm .The given equation for the mass attenuation coefficient is: Where:- is the mass attenuation coefficient- is a constant- is the wavelength of the X-ray radiation- is the atomic number of the mediumThe other two equations provided are not correct for the mass attenuation coefficient. The first equation ( ) and the second equation ( ) do not correctly represent the mass attenuation coefficient.Therefore, the correct answer is the third equation: .