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संबंधित प्रश्न
Why do Free electrons not leave the metal surface on their own
Give a scientific explanation.
When the radiation coming out from a certain radioactive substance is passed through an electric field, marks are found at three places on the photographic plate placed in its path.
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.
Define the term radioactivity.
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
What happens to the position of an element in the periodic table when it emits an alpha particle
Name a common device where a hot cathode ray tube is used.
Heavy radioactive elements eventually turn into ______.
If 10% of a radioactive substance decays in every 5 years, then the percentage of the substance that will have decayed in 20 years will be ______.
