Unit 19: Nuclear and Particle Physics — Mcqs

12th Class Physics · Unit 19: Nuclear and Particle Physics

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MCQ-19.1.What is the half-life of a radio nuclide if 1/16 of its mass is present after 2 h?

MCQ-19.2.Gamma radiations are emitted due to:

MCQ-19.3.Cadmium rods are used in nuclear reactor for:

MCQ-19.4.The mass of fissionable material needed for self-sustaining chain reaction is called:

MCQ-19.5.Graphite and heavy water are two common moderators used in a nuclear reactor. The function of the moderator is:

MCQ-19.6.The mass of a nucleus is always:

MCQ-19.7.Binding energy per nucleon is:

MCQ-19.8.What remains unchanged in a fusion event?

MCQ-19.9.Radioactive tracers are also employed to follow the path that various chemicals or food constituents take in:

MCQ-19.9b.The K.E. of the fission fragments is ultimately converted to: