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The decay constant of a radioactive samp...

The decay constant of a radioactive sample

A

decreases as the atom becomes older

B

increases as the atom becomes older

C

is independent of the age

D

dependes on the nature of activity

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The correct Answer is:
C
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NIKITA PUBLICATION-ATOMS, MOLECULES AND NUCLEI-MCQs
  1. The rate of decay of radioactive element

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  2. Which of the following of radioactive material is a measure of its ins...

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  3. The decay constant of a radioactive sample

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  4. The rate of disintegration at a given instant, is directly proportiona...

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  5. The time required for the atoms of that element to decrease to half th...

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  6. The half-life of a radioactive substance depends upon:

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  7. The mathematical equation of law of radioactive decay is

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  8. The relation between half life period and decay constant is

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  9. A radioactive decay rate of 1 curie represents

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  10. When a nucleus undergoes radioactive decay, its new mass number is

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  11. The decay constant of a radioactive element is definded as the recipro...

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  12. The half life of a radioactive element is T and its initial activity a...

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  13. The decay constant of the end product of a radioactive series is

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  14. Half-life-speed of lead is:

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  15. The half life of 1 gm of a radioactive element of atomic weight M is T...

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  16. Rate of disintegration per atom is called

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  17. The value of decay constant is independent of

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  18. Which of the following is the unit of activity of a radiactive element...

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  19. Half-life of radioactive element depend upon

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  20. N atoms of a radioactive substance emit n alpha-particles per second. ...

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