F.Sc ICS Notes: Physics XII: Chapter 21 Nuclear Physics Numerical Problems 2nd Year Physics Notes Online Taleem Ilmi Hub
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Numerical Problem 21.1: Find the mass defect and the binding energy for tritium, if the atomic mass of tritium is 3.016049.
Numerical Problem 21.2: The half life of 91Sr38 is 9.7 hours. Find its decay constant.
Numerical Problem 21.3: The element 234Pa91 is unstable and decays by beta ray emission with a half life 6.66 hours. State the nuclear reaction and the daughter nuclei.
Numerical Problem 21.4: Find the energy associated with the following reaction:
14N7 + 4He2 ------> 17O8 + 1H1.
Numerical Problem 21.5: Determine the energy associated with the following the following reaction:
14C6 -------> 14N7 + 0e-1.
Numerical Problem 21.6: If 233U92 decays twice by alpha emission, what is the resulting isotope?
Numerical Problem 21.7: Calculate the energy (in MeV) released in the following fusion reaction:
2H1 + 3H1 -----> 3He2 + 1n0.
Numerical Problem 21.8: Sheet of lead 5 mm thick reducing the intensity of beam of gamma rays by a factor 0.4. Find the half value thickness of lead sheet which will reduce the intensity to half of its initial value.
Numerical Problem 21.9: Radiation from a point source obeys the inverse square law. If the count rate at a distance of 1m from Geiger counter is 360 counts per minute, what will be its count rate at 3m from the source?
Numerical Problem 21.10: A 75 kg person receives a whole body radiation dose of 24 m rad, delivered by alpha particles for which RBE factor is 12. Calculate (a) the absorbed energy in joules, and (b) the equivalent dose in rem.
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