Question

X-rays are used for detecting cracks inside metal beams.

1. State the type of the x-rays used.
2. Give a reason for your answer in (i) above.

Answer 1

1. State the type of the x-rays used. 
   • Hard x-rays
2. Give a reason for your answer in (i) above. 
   • High penetrating power/ energetic

Answer 2

Hard x Ray and soft x ray