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CSE · Paper II · Nuclear & Particlecse-2005-subject-07-006

Fundamental interactions — UPSC Physics Optional CSE 2005 Paper II

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(i) What are the basic interactions in nature ? Give one example for each. Compare their relative strengths and ranges. (ii) What are the conservation laws for strong, electromagnetic and weak interactions ? (iii) Distinguish between particle and anti-particle. How was positron discovered ?

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