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A freshly prepared radioactive material has an half life 2 years.It emits radiaion which is 64 times the permissibile safe level dose.The min. time after which it would be possible to work safely with the source is_____________
Let the permissible radiation level be K. Current emission is 64K In 2 years, it will emit 32K In 4 years, it will emit 16K in 6 years, it emits 8K and so on In 12 years, the sample will emit radiation at level K, which is suitable for work
Let the permissible radiation level be K. Current emission is 64K
In 2 years, it will emit 32K
In 4 years, it will emit 16K
in 6 years, it emits 8K
and so on
In 12 years, the sample will emit radiation at level K, which is suitable for work
half-life period = 2 yrs since it emits 64 times the permissible level time after which it works safrly is : 2n=64 n=6 half lifes so, after 12 years , its safe to work with radioactive material --- Please feel free to post as many doubts on our disucssion forum as you can. If you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation. All the best. Regards, Naga Ramesh IIT Kgp - 2005 batch
half-life period = 2 yrs
since it emits 64 times the permissible level
time after which it works safrly is : 2n=64
n=6 half lifes
so, after 12 years , its safe to work with radioactive material
---
Please feel free to post as many doubts on our disucssion forum as you can. If you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation. All the best. Regards, Naga Ramesh IIT Kgp - 2005 batch
Dear student,Please find the solution to your problem below. half-life period = 2 yrssince it emits 64 times the permissible leveltime after which it works safrly is : 2n=64n=6 half lifesso, after 12 years , its safe to work with radioactive material. Hope it helps.Thanks and regards,Kushagra
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