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Number of nuclei of a radioactive substa...

Number of nuclei of a radioactive substance are `1000` and `900` at times `t=0` and time `t=2 s`. Then, number of nuclei at time `t=4s` will be

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The correct Answer is:
810
In `2` s only `90%` nuceli are left behind. Thus, in next `2 s 90%` of `900` or 810` nuclei will be left.
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CENGAGE PHYSICS-NUCLEAR PHYSICS-Single Correct Option
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  10. The binding energy of nuclei X and Y are E(1) and E(2), respectively. ...

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  11. The binding energy per nucleon number for deutron H(1)^(2)and helium...

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