The half - life of^(215) At is 100 mu , ...

The half - life `of^(215)` At is `100 mu , s.`The time taken for the radioactivity of a sample `of^(215)` At to dacay to `1//16^(th)` of its initialy value is

`400mus`

`6.3mus`

`40mus`

`300mus`

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Read the following : (i) The half-life period of a radioactive element X is same as the mean-life time of another radioactive element Y. Initially both of them have the same number of atoms. Then Y will decay at a faster rate the X. (ii) The electron emitted in beta radiation originates from decays of a neutron in a nucleus (iii) The half-life "of"^( 215) At is 100 ms. The time taken for the radioactivity of a sample "of"^( 215) At to decay to 1//16^(th) of its initial value is 400 ms. (iv) The volume (V) and mass (m) of a nucleus are related a V prop m. (v) Given a sample of Radium - 226 having halflife of 4 days. Find the probability, a nucleus disintegrates within 2 half lives is 3/4. Select the correct code for above.

The half life of .^(215)At is 100mu s . The time taken for the radioacticity of .^(215)At to decay to 1//16^(th) of its initial value is:

The half-life of ^215At is 100mus . The time taken for the activity of a sample of ^215At to decay to 1/16th of its initial value is

The half life of At^(215) is 100 mu The time taken for the radiocatively of sample of At^(215) to decay to (1)/(16) th of its initial value

The half life of a radioactive substance is 20s, the time taken for the sample to decay by 7//8^(th) of its initial value is

Find the half-life period of a radioactive material if its activity drops of (1/16)^(th) of its initial value in 40 years.

The half-life of a radioactive substance is 10 days. The time taken for the ((7)/(8)) th of the sample of disintegrates is

Half life of a sample is 20 minutes. In how much time will the acitivity of sample drop to 1//16 of its initial value?

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