PhysicsHardHigh School (11–12)Modern Physics › Nuclei and RadioactivityNEETAEEE (Amrita)AMUEEEAP EAPCETBCECECMI Entrance
Created by StemPy LabTwo statements about beta decay are given below. Statement I: In the beta minus decay of a nuclide, every electron is emitted with the same kinetic energy, because the daughter nucleus takes up the rest of the energy released. Statement II: The antineutrino emitted in beta minus decay carries away electric charge, so the daughter nucleus has one unit more charge than the parent.
← All Quizzes
← Two radioactive samples, X and Y, decay independently into stable nuclei. At time zero the activity of X is 4 times that of Y. The half-life of X is 2.0 h and that of Y is 6.0 h. After some time t the two activities become equal. What is the ratio of the number of undecayed nuclei of X to that of Y at that time t?Assertion (A): A nucleus of mass number 238, at rest, emits an alpha particle. The daughter nucleus takes up most of the energy released in the decay. Reason (R): The alpha particle and the daughter nucleus have momenta of equal magnitude, so the lighter of the two has the larger kinetic energy. →
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