A worker in a nuclear power station is exposed to 3∙0 mGy of gamma radiation and 0∙50 mGy of fast neutrons. The radiation weighting factor for gamma radiation is 1 and for fast neutrons is 10. The total equivalent dose, in mSv, received by the worker is A 3·50 B 8·00 C 30·5 D 35·0 E 38·5. The answer I got (using H=DWR) was C, 30.5 mSv, but the answer sheet said that the correct answer was B, 8.00 mSv. I would be most grateful if you could please suggest where I went wrong? Thank you for your help! (This question is from the SQA National 5 Physics Specimen Paper) Update: I asked a friend about it and realised my mistake. I converted mSv into Sv when I didn't need to, which then affected my answer.