Nuclei questions
336 published questions with worked solutions.
- Using a nuclear counter the count rate of emitted particles from a radioactive source is measured. At t = 0 it was 1600 counts...
- The activity of a radioactive sample falls from 700 s ^ -1 to 500 s ^ -1 in 30 minutes . Its half life is close to -
- The radius R of a nucleus of mass number A can be estimated by the formula R=(1.3 10^ -15 )A^ 1/3 m., It follows that the mass...
- From the statements given below: (A) The angular momentum of an electron in n^ th orbit is an integral multiple of ℏ. (B) Nuclear...
- The radius of a nucleus of mass number 64 is 4.8 fermi. Then the mass number of another nucleus having radius of 4 fermi is 1000...
- The disintegration energy Q for the nuclear fission of ^ 235 U → ^ 140 Ce + ^ 94 Zr + n is ____MeV. Given atomic masses of ^ 235...
- Which of the following nuclear fragments corresponding to nuclear fission between neutron (^1_0n) and uranium isotope (^ 235 _ 92...
- If three helium nuclei combine to form a carbon nucleus then the energy released in this reaction is ...... × 10^ -2 MeV. (Given...
- In a reactor, 2 kg of _ 92 U ^ 235 fuel is fully used up in 30 days. The energy released per fission is 200 MeV. Given that the...
- In a radioactive material, fraction of active material remaining after time t is 9/16. The fraction that was remaining after t/2...
- Binding energy of a certain nucleus is 18 × 10⁸ J. How much is the difference between total mass of all the nucleons and nuclear...
- In a hypothetical fission reaction ^ 236 _ 92 X → ^ 141 _ 56 Y + ^ 92 _ 36 Z + 3R. The identity of emitted particles (R) is:
- Find the Binding energy per neucleon for ^ 120 _ 50 Sn. Mass of proton m_p = 1.00783 U, mass of neutron m_n = 1.00867 U and mass...
- A radioactive nucleus decays by two different processes. The half life for the first process is 10 s and that for the second is...
- You are given that mass of ^7_3Li = 7.0160 u, mass of ^4_2He = 4.0026 u, and mass of ^1_1H = 1.0079 u. When 20 g of ^7_3Li is...
- Given the masses of various atomic particles m_p = 1.0072u, m_n = 1.0087u, m_e = 0.000548u, m_v = 0, m_d = 2.0141u, where p ≡...
- The energy equivalent of 0.5 g of a substance is :
- The binding energy per nucleon of ^ 209 _ 83 Bi is _______ MeV. [Take m(^ 209 _ 83 Bi) = 208.980388 u, m_p = 1.007825 u, m_n =...
- Two nuclei of mass number 3 combine with another nucleus of mass number 4 to yield a nucleus of mass number 10. If the binding...
- Assuming the experimental mass of ¹²₆C as 12 u, the mass defect of ¹²₆C atom is _______ MeV/c². (Mass of proton=1.00727u, mass of...
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