21 JEE Main 2023 Nuclear Physics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2023 previous-year questions from the Nuclear Physics chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Nuclear Physics chapter hub.
The half-life of a radioactive nucleus is 5 years. The fraction of the original sample that would decay in 15 years is :
The half life of a radioactive substance is T . The time taken, for disintegrating 7 8 t h part of its original mass wi…
Substance A has atomic mass number 16 and half life of 1 day. Another substance B has atomic mass number 32 and half li…
A radioactive element X 92 242 emits two α -particles, one electron and two positrons. The product nucleus is repr…
  92 238 A →   90 234 B + D 2 4 + Q In the given nuclear reaction, the approximate amount of energy rel…
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : The…
The decay constant for a radioactive nuclide is 1 . 5 × 10 - 5   s - 1 . Atomic weight of the substance is 60…
For a nucleus X Z A having mass number A and atomic number Z A. The surface energy per nucleon   ( b s ) = –…
The energy released per fission of nucleus of X 240 is 200   MeV . The energy released if all the atoms in 120 …
A radioactive nucleus decays by two different process. The half life of the first process is 5 minutes and that of the…
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