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Define decay constant

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Decay constant of a radioactive element is the reciprocal of the time during which the number of atoms left in the sample reduces to `1//e` times the original number of atoms in the sample.
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A radioactive nuclide can decay simultaneously by two different processes which have decay constant lambda_(1) and lambda_(2) . The effective decay constant of the nucleide is lambda

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RESONANCE-NUCLEAR PHYSICS-Exercise -3 Part-III CBSE PROBLEMS (LAST 10 YEARS)
  1. (a) Draw the energy level diagram showing the emission of beta-particl...

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  2. A raioactive sample contains 2.2 mg of pure .(6)^(11)C which has half-...

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  3. Define decay constant

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  4. Define the term half-life period and decay constant of a radioactive s...

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  5. The sequence of decay of radioactive nucleus is D overset alphato D1ov...

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  6. Explain the concept of nuclear forces. Discuss their characterstic pro...

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  7. State and explain the laws of radioactive disintergration. Hence defin...

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  8. Calculate the binding energy per nucleon of .(20)^(40)Ca. Given that ...

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  9. Calculate the amount of energy released during the alpha-decay of .(...

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  10. A neutron is absorbed by a .(3)^(6)Li nucleus with the subsequent emis...

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  11. What do you understand by isotopes, isobars and isotones? Explain with...

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  12. The nucleus .^(23)Ne deacays by beta-emission into the nucleus .^(23)...

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  13. Two nuclie have mass numbers in the ratio 1:2. What is the ration of t...

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  14. A radiactive nucleus 'A' undergoes a series of decays according to the...

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  15. Define the activity of a radionuclide. Write its SI unit. Give a plot ...

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  16. Draw a plot of potential energy of a pair of nucleons as a function of...

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  17. (a) Write symbolically the beta-decay process of ""(15)^(32)P. (b) ...

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  18. How is the size of nucleus experimentally determined ? Write the relat...

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  19. State the law of redioactive decay. Plot a graph showing the number (N...

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  20. What is the effect on neutron to proton ratio in a nucleus when (i) an...

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