Question

which isotope is used to determine cracks in under ground pipes​

Answer 1

Answer:

gamma y rays ,i think sooo

Answer 2

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• Gamma γ-rays are used to penetrate deep into welding joints to detectfaults. In gamma radiography, powerful y-rays are used to photograph the inside of steel plates as to reveal internal cracks. Iridium-192 emits y-rays that can penetrate steel sheets that are 12 to 60 mm thick and light alloys up to 190 mm thick.