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प्रश्न
State one use of radio-isotopes.
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उत्तर
The most important one use of radio-isotopes is in medicines which are used mainly to cure cancer.
संबंधित प्रश्न
What do you mean by Atomic number
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
State any two uses of cathode rays.
Why are materials of low work function preferred as thermionic cathode materials?
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
What do you understand by the term radioactivity?
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
State three ways of obtaining an electron-beam.
The mean lives of a radioactive substance are 1620 and 405 years for β-emission and β-emission respectively. The time after which three fourth of a sample will decay if it is decaying both by β-emission and β-emission simultaneously will be ______ years.
(Take ln 2 = 0.693)
