Respuesta :
The maximum allowable annual dose of radiation has been set at 1000 uSv by the worldwide commission on radiological protection. At this threshold or lower, there is no risk.
What is S(sievert)?
- The sievert, a measurement used to measure radiation, is used to calculate how much radiation is taken in by human tissues.
- 1000 millisieverts are equal to one sievert (mSv) [ 1 Sv= 1000 mSv]. There are 1,000 microsieverts in a millisievert[ 1 mSv = 1000 uSv]
Here are some details concerning the risks increasing radiation levels cause to our health:
- Yukio Edano, Japan's Chief Cabinet Secretary, had said that radiation levels near the damaged facility on the northeast coast may rise to 400 millisieverts (mSv) per hour.
- The lowest dose of exposure that causes any rise in cancer probability is readily visible is 100 mSv per year. Five out of every 100 people exposed to a cumulative 1,000 mSv (1 sievert) may likely get a deadly malignancy several years later.
- The central nervous system, as well as the red and white blood cells, are destroyed by high radiation doses or acute radiation exposure. This impairs the immune system, making it difficult for the sufferer to fight off diseases.
- One sievert (1,000 mSv), for instance, only results in radiation sickness, which includes nausea, vomiting, and bleeding, but not death. About half of individuals exposed to a single dose of 5 sieverts would perish within a month.
Therefore the correct choice is an option (A).
Learn more about radiation here:
https://brainly.com/question/1497235
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