What device is used to detect and measure an accumulated dosage of radiation?

• A. Dosimeter
• B. Thermometer
• C. Barometer
• D. Anemometer

Answer: (A)

Measuring how much radiation a person has been exposed to over time is the job of a dosimeter. It detects radiation and records the total dose accumulated during a period, so you can check exposure against safety limits. In practice, you might wear a dosimeter badge or use an electronic dosimeter; the readout shows the cumulative exposure. Thermometers measure temperature, barometers measure atmospheric pressure, and anemometers measure wind speed, so they do not track radiation exposure.