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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.

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  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
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Hard x Ray and soft x ray
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