29/03/2020 Nuclear Physics(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Nuclear Physics(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. The ionization power of the three radiations from radioactive substances arranged in ascending order is Alpha, beta, gammaBeta, alpha, gammaAlpha, gamma, betaGamma, beta alpha2. Black-body radiation can simply be defined as "the radiation from a perfect absorber"FalseTrue3. The discovery of Artificial Radioactivity and the production of Radionuclide can be dated back to 19301936193219344. Define "radioactive decay" The process by which atomic nuclei decayThe process by which an atom loses its mass over timeThe process by which an atom loses its electrons to the surroundings5. What is the difference in mass between before and after a nuclear interactionNone of the aboveMass defectBinding energy per nucleonBinding energy6. The sun produces its light energy from the fission of helium atoms. FalseTrue7. The sun produces its light energy from the fission of helium atoms. TrueFalse8. The nucleons in a nucleus are attracted by Gravitational forceElectrostatic forceMagnetic forceNuclear force9. A neutron is captured by a nucleus. Which of the following gives the changes in the atomic (proton) number and mass (nucleon) number of the nucleus? Proton number increases by 1 and nucleon number increases by 1Proton number unchanged and nucleon number increases by 1Proton number increases by 1 and nucleon number unchangedProton number unchanged and nucleon number unchanged10. An alpha particle is half the size of a helium atom. TrueFalse11. The nuclear radius of nucleus is1.3 x 10ˆ-15 m2.6 x 10ˆ-13 m1.3 x 10ˆ-13 m2.6 x 10ˆ-15 m12. A reactor design that utilizes plutonium-239 is known as a fast breeder reactorFalseTrue13. Which of the following is used as a neutron absorber in the nuclear reactorWaterDeuteriumCadiumSome compound of uranium14. The Radionuclide introduced into the body is chemically bond to a complex that acts characteristically within the body; it is commonly known as ScannerTracerDetectorTracker15. The strong force keeps the atom together, the weak force is responsible for decay.FalseTrue16. The nucleons in a nucleus are attracted by Gravitational forceElectrostatic forceMagnetic forceNuclear force17. The average energy released per fission is 200 meV200 eV200 GeV200 MeV18. "Device that allows the nuclear reactions to occur in a place that is sealed from the rest of the environment" Write down what is being definedmass storage unitcontainerheat exchanger19. "The energy liberated per unit mass of fuel consumed" What is being defined? Work functionCritical massEnergy densityAlbedo20. "The name given to a particular species of atom (one whose nucleus contains a specified number of protons and a specified number of neutrons)" What is being defined?NucleusNeutronNucleonNuclide21. The ionisation power is maximum for Neutronsγ – raysβ − particlesα – particles22. "Device which converts a portion of the sun's radiated energy directly into a potential difference" What is defined?Photovoltaic cellAlbedoSolar panelActive solar heater23. In β – decay Atomic number decreases by oneProton number remains the samemass number decreases by oneNeutron number decreases by one24. "A spectrum where all possible frequencies of light are present" What is being defined? Emission spectrumAbsorption spectrumContinuous spectrum25. Beta decay can increase the atomic number of a nucleus by a number of 1TrueFalse26 out of 25Time is Up!