Electrons are accelerated through a potential difference of 
. The electrons collide with a metal target and a spectrum of X-rays is produced.
Explain why a continuous spectrum of energies of X-ray photons is produced.
Calculate the wavelength of the highest energy X-ray photon produced.
A beam of X-rays has an initial intensity 
. The beam is directed into some body tissue. After passing through a thickness 
of tissue the intensity is 
. The graph below shows the variation with of 
.
Determine the linear attenuation (absorption) coefficient 
for this beam of X-rays in the tissue.
Determine the thickness of tissue that the X-ray beam must pass through so that the intensity of the beam is reduced to 
of its initial value.
.
.
.
