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What is the role of radium, promethium, and thulium with phosphor in certain objects?
What is the role of radium, promethium, and thulium with phosphor in certain objects?
- To examine the material inside a packing
- To create luminescent paint for decorating ceramic articles (correct)
- To measure radioactivity levels in industrial equipment
- To detect flaws in metal work using gamma rays
What is the purpose of using cobalt-60 and iridium-192 in radiography?
What is the purpose of using cobalt-60 and iridium-192 in radiography?
- To detect flaws in metal work (correct)
- To decorate ceramic articles
- To make certain objects visible in the dark
- To measure the thickness of iron sheets
How are radioactive substances used to measure the thickness, density, and level of materials like aluminium, plastic, and iron sheets?
How are radioactive substances used to measure the thickness, density, and level of materials like aluminium, plastic, and iron sheets?
- By using sound waves to determine the density
- By emitting visible light to measure the thickness
- By directly measuring the weight of the materials
- By placing a radioactive substance on one side and measuring radiation on the other (correct)
What was used earlier to create luminous colors for decorating ceramic tiles, utensils, and plates?
What was used earlier to create luminous colors for decorating ceramic tiles, utensils, and plates?
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Which radioactive isotope is used for food preservation?
Which radioactive isotope is used for food preservation?
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What is the radioactive isotope used in the treatment of hyperthyroidism?
What is the radioactive isotope used in the treatment of hyperthyroidism?
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Which isotopes are used in the treatment of bone cancer?
Which isotopes are used in the treatment of bone cancer?
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