Which value defines a high radiation area when measured as dose rate in 1 hour at the specified distance?

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Multiple Choice

Which value defines a high radiation area when measured as dose rate in 1 hour at the specified distance?

Explanation:
A high radiation area is defined by a dose rate of 100 mrem (1 mSv) in one hour at 30 cm from the source. The scenario of 0.1 rem in one hour at 30 cm exactly equals 100 mrem (1 mSv) per hour, meeting that threshold. The other measurements are below 100 mrem per hour at their specified distances (for example, 0.01 rem equals 10 mrem, or 0.1 mSv, which is under 100 mrem), or, in the case of a measurement at 10 cm with 0.1 rem, the dose rate at 30 cm would not reach the threshold. Thus, the value given at 30 cm that equals 100 mrem per hour correctly defines a high radiation area.

A high radiation area is defined by a dose rate of 100 mrem (1 mSv) in one hour at 30 cm from the source. The scenario of 0.1 rem in one hour at 30 cm exactly equals 100 mrem (1 mSv) per hour, meeting that threshold. The other measurements are below 100 mrem per hour at their specified distances (for example, 0.01 rem equals 10 mrem, or 0.1 mSv, which is under 100 mrem), or, in the case of a measurement at 10 cm with 0.1 rem, the dose rate at 30 cm would not reach the threshold. Thus, the value given at 30 cm that equals 100 mrem per hour correctly defines a high radiation area.

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