X-rays for use in medical diagnosis are produced in an X-ray tube. In the X-ray tube, charged particles are accelerated towards a metal target by an applied potential difference (p.d.).
State the name of the charged particles that are accelerated by the applied p.d.
Explain how X-rays are produced at the metal target.
Calculate the minimum wavelength of X-rays produced when the applied p.d. is 
.
X-rays pass through a medium that has an attenuation coefficient of 
. Calculate the percentage of the X-ray energy that is absorbed by a 
thickness of this medium.
.
.
