Advertisements
Advertisements
प्रश्न
Why should a radioactive substance not be touched by hands?
उत्तर
Radioactive substance should not be touched by hands because these radiations are harmful; when radiation falls on the human body, they kill the human living tissues and cause radiation burns.
APPEARS IN
संबंधित प्रश्न
Name the radiations which are absorbed by greenhouse gases in the earth’s atmosphere.
Complete the diagram as given above by drawing the deflection of radioactive radiations in an electric field
In the following fig. shows a radioactive source S in a thick lead container. The radiations pass through an electric field between the plates P and Q. Complete the diagram to show the paths of α , β and γ radiations.
Why is the source S placed in a thick lead container?
Explain the use of radioactive in the field of medicine, agriculture and industry.
State any two uses of cathode rays.
Name a common device where a hot cathode ray tube is used.
What is the value of the speed of gamma radiations in air or vacuum?
It is advised not to touch a radioactive substance by hand. Give reason.
