PH-324
Hazards of electromagnetic waves
Physics · Secondary 3 · Medium · Hazards of electromagnetic waves
A worker uses a strong gamma radiation source in a lab. To reduce the biological hazard to herself, which SINGLE change would lower her radiation dose the most?
- Stand twice as far away from the source
- Wear a thin cotton lab coat
- Halve the time she spends in the room
- Turn the source so it faces a wall instead
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