Module 5 Test PHYS 1402 - WTCQuestion 1An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is to be 2.00 m in diameter, how big should she try to make the nucleus? (This may be difficult to do.)Answer: 20 µmQuestion 2An energy of 26.0 eV is required to ionize a molecule of the gas inside a Geiger tube, thereby producing an ion pair. Suppose a particle of ionizing radiation deposits 0.420 MeV of energy in this Geiger tube. What maximum number of ion pairs can it create?Answer: 16200Question 3n + 235U 88Kr + 146Ba + 2 n(a) Calculate the energy released in the neutron-induced fission reaction above, given m(88Kr) = 87.914447 u and m(146Ba) = 145.930107 u.Answer: 177.6 Question 4Each atom in the periodic table has a unique set of spectral lines. The model of atomic structure that provides the best explanation for this observation was proposed byC. Bohr. Question 5Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?B. existence of line spectra and the photoelectric effect Question 6What is the longest wavelength in the Paschen series of atomic spectra?E. 1.875 × 10–6 m Question 7Determine the kinetic energy of an electron that has a de Broglie wavelength equal to twice the diameter of the hydrogen atom. Assume that the hydrogen atom is a sphere of radius 5.3 × 10–11 m.C. 33.6 eV Question 8What is the shortest possible wavelength in the Lyman series for atomic hydrogen?E. 91.3 nmQuestion 9Which one of the following statements concerning stable nuclei is true?E. Stable nuclei generally have more neutrons than protons. Question 10Which one of the following descriptive terms does not apply to nuclear forces?E. long-range Question 11Which process is used in the operation of a common the smoke detector?E. alpha decay Question 12Which one of the following quantities is not a conserved quantity according to the laws of physics?E. kinetic energy Question 13In a beta decay process, not all of the released energy is carried by the beta particle. Who proposed the existence of the neutrino in 1930 to account for the missing energy?E. Wolfgang Pauli Question 14A sample contains 1000 nuclei of a radioactive isotope of barium. Exactly sixty seconds later, 970 nuclei in the sample have decayed. Determine the half-life of this isotope.E. 12 s Question 15The fusion of a 3.80 kg mixture of helium involves 755.4 mol each of deuterium and tritium. How many kilograms of water are needed to obtain this amount of deuterium, assuming that deuterium is 0.01500% (by number) of hydrogen?Answer: 45400