Question

For an average person, which of the following is likely to be the MOST significant source of exposure to radiation?

a)emissions from nuclear power plants

b)elements found naturally in human tissue

c)luminous watch dials

d)cosmic radiation

e)fallout from nuclear testing

Answer 1

The high energy radiation effects the human life. The most effective radiation source is the Radioactivity. The radioactive elements produces many types of radiations such as Alpha, beta, gamma radiations which are highly dangerous as they are of High energy. Gamma and x-ray radiation are most dangerous. Fallout from the nuclear testing is the most significant source for exposure to humans. Fallout consists of the fission particles and they are highly dangerous for us. The nuclear explosion produces various type of radioisotopes which emits different type of radiations.

Cosmic Rays are high energy radiation that are present in solar system. Cosmic Rays are not able to reach to the low attitude of earth surface.

Nuclear power plant produces low amount of radiations does not creates any hazards. Accidental Damages may produced some problems.

Luminous watch dials are not significant radiation source.

The human body consists of many radioisotopes such as C14, K40 etc.

Low radiation cause not much effect to us but when exposed to high energy radiation tthey are fatal or human life. .

So the correct answer is e.