Question

Assume that the sensitivity of x-ray film is proportional to the mass absorption
coefficient of the silver bromide in the emulsion for the particular wavelength involved.
What, then, is the ratio of film sensitivities to Cu Ka and Mo Ka radiation?
please with details

Answer 1

1. At first we know that 'mass absorption coefficient' is given by ' where is absorption coefficient and is the mass density.so the ratio of sensitivity of Cu Ka and Mo Ka radiation is the ratio between mass density of Mo and Cu i.e _Cu/_Mo=10.28/8.96=1.15 where _Cu=8.96g/cm^3 and _Mo=10.28g/cm^3.