Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEST2019PhysicsNuclear Physics

C ¹⁴ has a half life of 5730 years and its abundance in the atmosphere is 1 in 10¹² carbon atoms. A fresh sample of 0.001 mole of CO ₂ collected from the atmosphere records a decay of 1700 C ¹⁴ atoms over a week. A large piece of old wood is burnt and 0.001 mole of CO ₂ collected from it records a decay of 430 C ¹⁴ atoms over a week. Then the age of the wood is close to

Options

  1. A8600 years.
  2. B11500 years.
  3. C2900 years.
  4. D1440 years.

Correct answer

B. 11500 years.

Step-by-step solution

No solution available.

Practice Nuclear Physics on Quantrex Academy →

More from Nuclear Physics

The main function of cadmium used in the nuclear reactor is: 2026The atomic mass of an element ₁₀X²⁰ is 19.98170 amu. The binding energy per nucleon of that element is: [given mass of neutron = 1.00867 amu and mass of proton = 1.00783 amu and 1a 2026If the ratio of the nuclear radii of two atoms is 2:3 then the ratio of their mass numbers is: 2026Two deuterons are fused to form one alpha particle. If binding energy per nucleon of deuterium is 1.05 MeV and that of alpha particle is 7 MeV, what is the energy released in the f 2026A nucleus of uranium-235 absorbs a slow neutron and undergoes nuclear fission according to the reaction: ²³⁵₉₂U + ¹₀n ¹⁴¹₅₆Ba + ⁹²₃₆Kr + 3 ¹₀n + Q If the average energy released pe 2026A mercury-198 nucleus is bombarded by a neutron, which causes a nuclear reaction ¹₀n + ¹⁹⁸₈₀Hg ¹⁹⁷₇₉Au + X What is the unknown product particle X? 2026The three numbers: (number of protons, number of neutrons, the radius) characterize a nucleus. What is the value of r₁ r₂ for two nuclei characterized by (1, 0, r₁) and (4, 4, r₂) 2026If the binding energy per nucleon of deuteron ( ₁ H ^2 ) is 1.15 MeV and an -particle has a binding energy of 7.1 MeV per nucleon, then the energy released per nucleon in the given 2025 Full Nuclear Physics list All NEST PYQs