What is dose rate, and how is it typically expressed?

• A. Dose rate is the energy deposited per unit mass, expressed as Gy.
• B. Dose rate is dose per unit time, typically expressed as mSv/hour, used to estimate total exposure by multiplying by duration.
• C. Dose rate is the total dose accumulated over a year, expressed as mSv/year.
• D. Dose rate is the counts per second detected by a detector.

Answer: (B)