Question

Describe what is meant by significant figure and order of magnitude

Answer 1

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Answer:

The digits, whose values are accurately known in a particular measurement are called significant figures. The number expressing the magnitude of a measurement should be recorded with only as many as digit as properly indicate the accuracy of the measurement

An order of magnitude is an exponential change of plus-or-minus 1 in the value of a quantity or unit. The term is generally used in conjunction with power-of-10 scientific notation.

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