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The half-life of a radioactive substance...

The half-life of a radioactive substance depends upon:

A

decay costant

B

mass of substance

C

atomic number of substance

D

all of these

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The correct Answer is:
A
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NIKITA PUBLICATION-ATOMS, MOLECULES AND NUCLEI-MCQs
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  2. The time required for the atoms of that element to decrease to half th...

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

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  4. The mathematical equation of law of radioactive decay is

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

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  6. A radioactive decay rate of 1 curie represents

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

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

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

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

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  11. Half-life-speed of lead is:

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

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  13. Rate of disintegration per atom is called

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  14. The value of decay constant is independent of

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

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  16. Half-life of radioactive element depend upon

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

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  18. If the half life of radium is 1620 years then its decay constant is

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  19. A radioactive substance decay to 1/5 of its original value in 56 days....

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  20. The activity of a radioactive substance is readuced by 80% in 100 days...

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