Form 4 KCSE Physics revision questions and answers on X-rays with video explanations

a)X-rays are used for detecting cracks inside metal beams
i. State the type of the Xrays used
ii) Give a reason for your answer in (i) above
b)Figure 13 shows the features of an X-ray tube

i)Name the parts labelled A and B
ii. Explain how a change in potential across PQ changes the intensity of the X-rays produced in the tube.
iii) During the operation of the tube, the target becomes very hot. Explain how this heat is caused.
iv) What property of lead makes it suitable for use as shielding material?
c) In a certain X-ray tube, the electron are accelerated by a p.d of 1200V.Assuming all the energy goes to produce Xrays,
determine the frequency of the X-rays produced. (Planks constant h = #6.62 times 10^-34#Js and charge on electron, e =#1.6 times 10^-19#C)