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The lowest level ""^(14)C activity for e...

The lowest level `""^(14)C` activity for experimental detection is 0.03 dis/min/g of C. What is the maximum age of an object that can be determined by the C-14 method? Use necessary data from previous example

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To determine the maximum age of an object that can be measured using the C-14 method, we will follow these steps: ### Step 1: Identify the half-life of Carbon-14 The half-life of Carbon-14 (C-14) is given as 5730 years. ### Step 2: Calculate the decay constant (λ) The decay constant (λ) can be calculated using the formula: \[ ...
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Carbon 14 is used to determine the age of organic material. The procerdure is based on the formation of .^(14)C by neutron capture in the upper atmosphere. ._(7)^(14)N + ._(0)^(1)n rarr ._(6)^(14)C + ._(1)n^(1) .^(14)C is abosorbed by living organisms during phostosythesis. The .^(14)C content is constant in living organisms once the plant or animal dies, the uptake of carbon dioxide by it ceases and the level of .^(14)C in the dead being, falls due to the decay which .^(14)C undergoes. ._(6)^(14)C rarr ._(7)^(14)C + beta^(-) The half-life period of .^(14)C is 5770 years. The decay constant (lambda) can be calculated by using the following formula lambda = (0.693)/(t_(1//2)) The comparison fo the beta^(-) activity fo the dead matter with that of the carbon still in circulation enables measurement of the period of the isolation the materail form the living cycle. The method however, ceases to be accurate ever periods longer than 30,000 years. The proportaion of .^(14)C to .^(12)C living matter is 1:10^(12) . A nulcear explosion has taken place leading to increases in conventration of ^(14)C in nearly areas. ^(14)C concentration is C_(1) in nearby areas and C_(2) in areas far away. If the age of the fossil is detemined to be T_(1) and T_(2) at the places respectively, then:

Carbon 14 is used to determine the age of organic material. The procerdure is based on the formation of .^(14)C by neutron capture in the upper atmosphere. ._(7)^(14)N + ._(0)^(1)n rarr ._(6)^(14)C + ._(1)n^(1) .^(14)C is abosorbed by living organisms during phostosythesis. The .^(14)C content is constant in living organisms once the plant or animal dies, the uptake of carbon dioxide by it ceases and the level of .^(14)C in the dead being, falls due to the decay which .^(14)C undergoes. ._(6)^(14)C rarr ._(7)^(14)C + beta^(-) The half-life period of .^(14)C is 5770 years. The decay constant (lambda) can be calculated by using the following formula lambda = (0.693)/(t_(1//2)) The comparison fo the beta^(-) activity fo the dead matter with that of the carbon still in circulation enables measurement of the period of the isolation the materail form the living cycle. The method however, ceases to be accurate ever periods longer than 30,000 years. The proportaion of .^(14)C to .^(12)C living matter is 1:10^(12) . What should be the age of fossil for meainingful determination of its age?

Carbon 14 is used to determine the age of organic material. The procerdure is based on the formation of .^(14)C by neutron capture in the upper atmosphere. ._(7)^(14)N + ._(0)^(1)n rarr ._(6)^(14)C + ._(1)n^(1) .^(14)C is abosorbed by living organisms during phostosythesis. The .^(14)C content is constant in living organisms once the plant or animal dies, the uptake of carbon dioxide by it ceases and the level of .^(14)C in the dead being, falls due to the decay which .^(14)C undergoes. ._(6)^(14)C rarr ._(7)^(14)C + beta^(-) The half-life period of .^(14)C is 5770 years. The decay constant (lambda) can be calculated by using the following formula lambda = (0.693)/(t_(1//2)) The comparison fo the beta^(-) activity fo the dead matter with that of the carbon still in circulation enables measurement of the period of the isolation the materail form the living cycle. The method however, ceases to be accurate ever periods longer than 30,000 years. The proportaion of .^(14)C to .^(12)C living matter is 1:10^(12) . Which fo the following option is correct?

RC MUKHERJEE-ATOMIC STRUCTURE AND RADIOACTIVITY-Objective Problems
  1. The lowest level ""^(14)C activity for experimental detection is 0.03 ...

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  2. The frequency of a green light is 6 xx 10^(14)Hz. Its wavelength is

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  3. The ratio of energy of a photon of 2000Å wavelength radiation to that ...

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  4. The values of charge on the oil droplets experimentally observed were ...

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  5. Which of the following statements is/are correct?

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  6. For which of the following species, Bohr theory does not apply?

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  7. The radius of the first Bohr orbit of hydrogen atom is r. The radius o...

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  8. The electronic velocity in the fourth Bohr orbit of hydrogen is v. The...

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  9. The ionisation potential of hydrogen atom is 13.6 eV. The energy requi...

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  10. The energy of the second Bohr orbit in the hydrogen atom is -3.41eV. T...

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  11. The ratio of the radii of the first three Bohr orbit in H atom is

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  12. The ratio of the difference in energy between the first and second Boh...

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  13. For 1=3, which value of m is not possible?

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  14. The designation of an orbital with n=4 and l=1, is

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  15. Which of the following orbitals is meaningless?

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  16. Which one of the following sets of quantum number is possible for elec...

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  17. The maximum number of electrons in an atom with quantum number n=3, l=...

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  18. The number of orbitals in n=3 are

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  19. If the nitrogen atom has electronic configuration 1s^(7), it would hav...

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  20. Rutherfords experiments , which established the nuclear model of atom ...

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  21. Total number of nodal planes are same in :

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