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प्रश्न
Name two sources of background radiations.
संक्षेप में उत्तर
उत्तर
The sources of background radiation are:
- Internal source: The radioactive substances such as potassium (K-40), carbon (C-14) and radium are present inside our body.
- External source: cosmic rays, naturally occurring radioactive elements such as radon-222 and solar radiation.
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Background Radiations
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