Nuclei questions
336 published questions with worked solutions.
- The energy released if hydrogen atoms are combined to form ⁴₂He is _______ MeV. (Take binding energies per nucleon of ²₁H and...
- The energy released when (7/17.13) kg of ⁷₃Li is converted into ⁴₂He by proton bombardment is α×10³² eV. The value of α is...
- Two radioactive substances A and B of mass numbers 200 and 212 respectively, shows spontaneous α-decay with same Q value of 1...
- The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to ( 1 16 )^ th of its...
- A radioactive nucleus ^ A _ Z X undergoes spontaneous decay in the sequence X B(Z-1) C(Z-3) D(Z-2), where Z is the atomic number...
- The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be :
- A nucleus with mass number 240 breaks into two fragments each of mass number 120, the binding energy per nucleon of unfragmented...
- The energy released in the fusion of 2 kg of hydrogen deep in the sun is E_H and the energy released in the fission of 2 kg of...
- The energy equivalent of 1 g of substance is:
- A star has 100% helium composition. It starts to convert three ⁴He into one ¹²C via triple alpha process as ⁴He + ⁴He + ⁴He → ¹²C...
- The atomic mass of ₆C¹² is 12.000000 u and that of ₆C¹³ is 13.003354 u. The required energy to remove a neutron from ₆C¹³, if...
- In a nuclear fission process, a high mass nuclide (A = 236) with binding energy 7.6 MeV/Nucleon dissociated into middle mass...
- The explosive in a hydrogen bomb is a mixture of ₁H², ₁H³ and ₃Li⁶ in some condensed form. The chain reaction is given by ₃Li⁶ +...
- In a nuclear fission reaction of an isotope of mass M, three similar daughter nuclei of same mass are formed. The speed of a...
- The mass number of nucleus having radius equal to half of the radius of nucleus with mass number 192 is
- A nucleus has mass number A₁ and volume V₁. Another nucleus has mass number A₂ and Volume V₂. If relation between mass number is...
- The half life period of radioactive element x is same as the mean life time of another radioactive element y. Initially they have...
- The half-life of Au^ 198 is 2.7 days. The activity of 1.50 mg of Au^ 198 if its atomic weight is 198 g mol ^ -1 is, (N_A=6 10^ 23...
- The decay of a proton to neutron is :
- A radioactive sample disintegrates via two independent decay processes having half lives T_ 1/2 ^ (1) and T_ 1/2 ^ (2)...
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