For a radioactive material , half - ...

For a radioactive material , half - life is 10 minutes . If initially there are 600 number of nuclei , the time taken ( in minutes ) for the distingration of 450 nuclei is

`3`

`10`

`20`

`15`

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For a radioactive material , half-life is 10 minutes . If initially there are 600 number of nuclei , the time taken (in minutes ) for the disintegration of 450 nuclei is

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A radioactive sample of half-life 30 d contains 10^12 particles at an instant of time. Find the activity of the sample.

The half-life of a radioactive element is 8 d . If the initial mass of the element be 1 g then what amount of it will be disintegrated in 24 d ?

A radioactive isotope has a half-life of 10 years. How long will it take for the activity to reduce to 3.125% ?

Suppose we consider a large number of containers each containing initially 10000 atoms of radioactive material with a half-life of 1 year. After 1 year, (A) All containers will have 5000 atoms (B) All the containers will contain the same number of atoms but that number will only be approximately 5000. (C) The containers will in general have different numbers of the atoms but their average will be close to 5000. (D) None of the containers can have more than 5000 atoms.

A radioactive material reduces to 1/8 th of its initial amount in 18000 y. Find its half-life period.

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