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Calculate the age of a vegetarian bevera...

Calculate the age of a vegetarian beverage whose tritium content is only 15% of the level in living plants. Given `t_(1//2) ` for `._(1) H^(3)= 12.3 ` years.

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The correct Answer is:
`33.67 ` years
`t=(1)/(lambda) ln. (%R.A.)/((%R.A.)"sample""`
`t=(t_(1//2))/(0.693) ln. (x)/(x xx(15)/(100))=(12.3)/(0.693) ln. (20)/(3) rArr 33.67` year
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BANSAL-RADIO ACTIVITY-Exercise-3
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  2. True or False Statements : The ratio t(1//2) //t(7//8) for a first o...

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  5. Consider the following nuclear reactions : I .(7)^(14)N+.(2)^(4)Hera...

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  6. The activity of the radioactive sample drops to (1/64)^(th) of its o...

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  7. The half life period of .(53)I^(125) is 60 days. What % of radioactivi...

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  8. At any given time a piece of radioactive material (t(1//2)=30 days) c...

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  9. An isotope of Potassium .(19)^(40) K has a half life of 1.4 xx 10^(9...

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  10. At a given instant there are 25% undecayed radioactive nuclei in a s...

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  11. Calculate the energy released in joules and MeV in the following nucle...

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  12. A sample of U^(238) ("half life" = 4.5 xx 10^(9)yr) ore is found to co...

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  13. Calculate the age of a vegetarian beverage whose tritium content is on...

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  16. In one of neutron induced fission of .(92)U^(235),. (38)Sr^(90) & .(54...

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  17. Most of the weight of the human body is because of the water present...

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  18. Calculate the specific activity of a radioactive substance .(98)^(250)...

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  19. An isotope of postassium K^(40) undergoes two parallel type of decay, ...

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  20. Find the decay constant of .^(55)Co radio nuclide if its activity is k...

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