Question

Give reason standard physical quantity is used for correct measurement of the given body​

Answer 1

Standard physical quantity is used for measurement because they are the components of a given body that can be measured using physical measuring tools and are less prone to errors; weighing balance, Rule are some of the measuring tools

Physical and non-physical quantities can be measured but the measurement carried out on physical quantities are less prone to error, when compared to non-physical measurement. Non-physical measurements are carried out using the Ordinal scale ( more or less an estimate measurement )

Examples of physical quantities includes : mass , height , temperature  while Non-physical quantities includes : anger , personal feelings  e.t.c

Hence the reason why standard physical quantities are used is because they are measured using measuring tools and are less prone to error

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Answer 2

Answer:

Physical quantities are the substances which can be measured. By measuring physical quantities, we can measure the mass, weight and other physical properties