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Introduction of Dimensions.
The nature of physical quantities is given by their dimensions. The derived physical quantities are given by derived units, which are expressed in terms of some combination of fundamental quantities.
Dimensions of a physical quantity are the powers (or exponents) to which the base quantities are raised to represent that quantity.
The dimensional formula of any physical quantity gives expression which represents how and which of the base quantities are related in that quantity.
Dimensional formula is written by enclosing the symbols for base quantities with appropriate powers in square brackets . e. g. dimensional formula of… (108 more words) …
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