Question

People are constantly being barraged with low-level radiation. Which radiation source below contributes the most low-level radiation exposure to the average person?a) cosmic raysb) medical X-raysc) radond) rocks, soils, and food

Answer 1

I think the answer is C) Radond

Answer 2

C) Radon

Step-by-step explanation:

Humans are terrified of radiation attack but we are unaware that we face radiations from a lot of natural sources which includes food and water. But their level is low and thus do not have any major impact on our body.

As per US Nuclear Regulatory Commission,on an average, an American faces a radiation of 620 millirem each year. Out of this 50% is because of Natural background radiation. Majority of this radiation is due to Radon in the air, with small contribution (around 30 millirem) from Cosmic rays and even smaller contribution from Earth itself.