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.
APPEARS IN
संबंधित प्रश्न
An element `""_ZS^A` decays to `""_85R^222` after emitting 2 α particles and 1 β particle.
Find the atomic number and atomic mass of the element S.
Under which conditions does the nucleus of an atom tend to radioactive?
A radioactive source emits three types of radiations. Name them.
(i) Name the radiations which are charged.
(ii) Name the radiations which are most penetrating.
(iii) Name the radiations which travel with the speed of light.
(iv) Name the radiations which have the largest mass.
Why should a radioactive substance not be touched by hands?
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
What is the value of the speed of gamma radiations in air or vacuum?
Mention four properties of Becquerel rays.
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 ______.
