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प्रश्न
Explain the use of radioactive in the field of medicine, agriculture and industry.
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उत्तर
Uses of radioactivity in medical, agriculture and industry:
Uses in medical field:
(i) Rays from Radium produce satisfactorily improvement in skin diseases.
(ii) Radiation from Co60 is used in cancer treatment.
(iii) Radio I131 is used to diagnose and treat thyroid disorders.
Uses in agriculture:
(i) Radioactive Phosphorus P32 is used in the study of metabolism.
(ii) Radioactive Sulphur S35 helps to study advantages and disadvantages
of fungicides.
(iii) Pests and insects can be killed by Y-radiation.
Uses in industry:
(i) In manutacturing papers, plastic ·and m·etal sheets to control the
thickness of the sheets.
(ii) Radioisotopes can be used to estimate the amount of wear in bearings.
(iii) Radioisotopes can be used to detect crack in welding, casting etc.
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संबंधित प्रश्न
Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown below in the diagram. The arrows show the path of the radiation A, B and C. Answer the following questions in terms of A, B and C.
1) Name the radiation B which is unaffected by the electrostatic field.
2) Why does the radiation C deflect more than A?
3) Which among the three causes the least biological damage externally.
4) Name the radiation which is used in carbon dating.
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
Justify with reason, whether the following nuclear reactions are allowed or not.
\[\ce{^A_Z X -> ^A_{Z - 2}X + ^4_{2}He}\]
From α, β and γ-rays, name the one which travels with the speed of light?
Mention one important function of ear main parts:
State the principle on which the functioning of a nuclear reactor is based.
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on m as:
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
Which type of radioactive emission is strongly ionising in nature?
