# Category: Chapter-2(Units and Measurement) ## Dimensional Analysis and It’s ApplicationsDimensional Analysis and It’s Applications

The dimensional analysis helps us in reducing the relations among different physical quantities and checking the accuracy, derivation and dimensional ... ## Dimensions Of A Physical QuantityDimensions Of A Physical Quantity

All the derived physical quantity can be expressed in the terms of some combination of the seven fundamental or base ... ## Rules For Arithmetical Operations With Significant FiguresRules For Arithmetical Operations With Significant Figures

The following rules for Arithmetical operations with significant figures that make final result more consistent with the Precision of the ... ## Rounding OffRounding Off

The result of computation with approximate numbers, which contain more than one uncertain digit should be rounded off. Rules For ... ## Significant FiguresSignificant Figures

The significant figures are normally the measurement of a number that includes all digits in the number that is known ... ## Combination Of ErrorsCombination Of Errors

When we perform the mathematical operations, such as addition, subtraction, division, multiplication etc, the error combination depends on the type ... ## Errors In MeasurementErrors In Measurement

To measure any physical quantity, we compare it with a standard unit of that quantity. No measurement is perfect as ... ## Accuracy And Precision Of InstrumentsAccuracy And Precision Of Instruments

Accuracy The accuracy of a measurement is a measure of how close the measured value is to the true value ... ## Measurement Of TimeMeasurement Of Time

A clock is used to measure time interval. An atomic standard of time is based on periodic vibration produced in ... ## Measurement Of MassMeasurement Of Mass

Mass of a body is the quantity of matter in the body which does not depend on the temperature, pressure ...