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प्रश्न
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.
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उत्तर
A radioactive source emits three types of radiations. These are a
radiations, β radiations and Y radiations.
(i) α radiations and β radiations a re charged radiations.
(ii) Y radiations a re most penetrating radiations.
(iii) Y radiation travels with speed of light.
(iv) a radiations have largest mass.
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube
Name the charged particles
What are free electrons?
How can they be made to leave the metal surface? (State any two ways)
In a cathode ray tube state:
(i) the purpose of covering cathode by thorium and carbon.
(ii) the purpose of the fluorescent screen.
(iii) how is it possible to increase the rate of emission of electrons.
When is said to be the nucleus unstable?
A radioactive source emits three types of radiations.
Name the radiation which has the highest ionizing power.
State three safety precautions that you would take while handling the radioactive substances.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
Mention four properties of Becquerel rays.
A deuteron strikes 8O16 nucleus with subsequent emission of an alpha particle. Identify the nucleus so produced:
