Unit and Measurement | Applied Physics-I | 1st Semester Polytechnic | NatiTute
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Загружено: 2025-09-21
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Unit 1: Physical world, Units and Measurements
Physical quantities; fundamental and derived, Units and systems of units ( CGS and SI units),
Dimensions and dimensional formulae of physical quantities, Principle of homogeneity of dimensions, Dimensional equations and their
applications (conversion from one system of units to other, checking of dimensional equations and derivation of simple equations),
Limitations of dimensional analysis.
Measurements: Need, measuring instruments, least count, types of Measurement (direct, indirect), Errors in Measurements
(systematic and random), absolute error, relative error, error propagation, error estimation and significant figures.
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