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प्रश्न
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उत्तर
Artificial radioactive substances can be produced by bombarding lighter nuclides with alpha particles, protons and neutron. The radioactive substances produces in this manner are called radioisotopes.
Radioisotopes can be used as:
(i) Rays from Radium produce satisfactorily improvement in skin diseases.
(ii) Radioactive Sulphur S35 helps to study advantages and disadvantages of fungicides.
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संबंधित प्रश्न
How can they be made to leave the metal surface? (State any two ways)
Why is a cathode ray tube evacuated to a low pressure?
Complete the diagram as given above by drawing the deflection of radioactive radiations in an electric field
State the penetrating range of α, β and γ radiations.
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.
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?
Define bound electrons.
Explain, why radium paint, consisting of zinc sulphide and a trace of radium salt, glows in the dark?
Mention one important function of ear main parts:
State the principle on which the functioning of a nuclear reactor is based.
Heavy radioactive elements eventually turn into ______.
