Advertisements
Advertisements
प्रश्न
What is meant by Radioactivity?
Advertisements
उत्तर
Process of spontaneous emission of α or β and γ radiations from the nuclei of atoms during their decay.
संबंधित प्रश्न
How can they be made to leave the metal surface? (State any two ways)
Write one use of cathode ray tube.
Name the unit in which the work function of a metal is expressed.
What are isobars?
What is meant by radioactivity?
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 three safety precautions that you would take while handling the radioactive substances.
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
The count rate of activity of a radioactive sample of a very large population decreased from 1024 to 128 in 3 minutes. Then the rate of disintegration at the end of 5 minutes is ______.
