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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
Answer the following questions based on a hot cathode ray tube
Name the charged particles
A radioactive substance is oxidized. Will there be any change in the nature its radioactivity? Give a reason for your answer
Name the unit in which the work function of a metal is expressed.
Name two radioactive substances.
State any two uses of cathode rays.
Name the three main parts of a Cathode Ray Tube.
Two radioactive nuclei are represented by xAp and yAq and when p and q are mass numbers and x, y are the atomic number. How can the products be represented, i .e., what are the new values of p, q. x and y after the emission of an α-particle and a β-particle from A and B respectively.
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be ______.
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
