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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
Answer the following questions based on a hot cathode ray tube.
What will happen to the beam when it passes through the electric field?
State three factors on which the rate of emission of electrons from a metal surface depends
Under which conditions does the nucleus of an atom tend to radioactive?
What do you mean by Atomic mass
A nucleus of an element X which has the symbol `""_84^202` X emits an alpha particle and then a beta particle. The final nucleus is `""_"b"^"a"` Y Find a and b.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
State any two uses of cathode rays.
In U238 ore containing Uranium the ratio of U234 to Pb206 nuclei is 3. Assuming that all the lead present in the ore is final stable product of U238. Half life of U238 to be 4.5 × 109 years and the age of ore is ______ × 109 years. (in 109 years)
