Q. The standard dose rate of a radioactive isotope is expressed in: (Solved)

1. Roentgens per hour per curie at any standardised distance not exceeding 75 feet

2. Roentgens per hour per curie per foot

3. Roentgens per hour at a distance of one foot

4. Curies per hour

  • c. Roentgens per hour at a distance of one foot
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