physical significance of entropy

Like pressure, volume, temperature and internal energy, we have another thermodynamic variable of a system, named entropy . In a given state of equilibrium, the system has a definite value of entropy. If the system has a temperature T (in absolute scale) and a small amount of he..

It is the expression of accuracy of a physical quantity. The value in digits, accurately known in a measurement plus one digit that is not certain, is called significant figures. Significant figures is directly proportional to the accuracy of measurement. Eg., a readin..

The significant figures are all those digits which we are absolutely sure of plus those digits that we are not sure of. However, the digits have a meaningful value. This also provides us with information about the extent of uncertainty in measurement. E.g., All the experiments give ans..

These express the degree of accuracy of measurements. It is a statement which gives number of digits up to which we are sure about their accurac..

Arithmetic Operations With Significant Figures - The accuracy of a result is taken to be equal to the least accurate among the numbers, when 2 or more numbers are used to add, subtract, multiply or divide. The number of significant figures in the result, is equal to the number o..

The accuracy of a result is taken to be equal to the least accurate among the numbers, when 2 or more numbers are used to add, subtract, multiply or divide. The number of significant figures in the result, is equal to the number of significant digits in the least accurate one am..

All the digits from 1, 2, 3, 4, ., 9 are significant digits. Zeros (0s) if they occur between non-zero digits, are significant For example, in the number- 325007, 2409, 308, zeros in between the digits are significant. The final zeros (0s) of an approximated number w..

Introduction - Significant Figures - Measuring instruments have a limit upto which measurements can be made, called as the least count of the instrument. Errors are seen when measuring through various instruments. For e.g., accuracy of the temperature measured by thermometer depends on th..

Measuring instruments have a limit upto which measurements can be made, called as the least count of the instrument. Errors are seen when measuring through various instruments. For e.g., accuracy of the temperature measured by thermometer depends on the thermometer and the measuring person. If the ..