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What is dimension of a physical quantity ? |
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Answer» Solution :Any physical quantity can be represented by using dimension. Any physical quantity can be represented as combination of 7 base (fundamental) quantity. Its symbol are as follows: Mass : M Length: L Time : T Electric current: A THERMODYNAMICS temperature : K Luminous Intensity : CD Quantity of matter : mol Dimension: Power or exponent to which base quantity is reaised to is called dimension of that quantity : `=mxxmxx m` `=m^(3)` `beta` In volume dimension of length is 3 WHERES as dimension of mass and time is ZERO. Example : Force =F=ma `="maxx" xx "acceleration"` `=M^(1)xxL^(1)T^(-2)` `=M^(1)L^(1)xxT^(-2)` `:.` In force, dimension of mass, length and time is 1,1, and -2 respectively. |
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