iv)
Describe what is meant by significant
figures and order of magnitude.
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Explanation:
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.
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Significant figure:-) The number of digit in a measurement about which we are certain,plus one additional digit,the first one about digit we are not certain is known as significant figures or significant digits.
Order of Magnitude:-)The magnitude of any physical quantity can be expressed as Ax10n where 'A' is a number such that 0.5<A<5 and 'n' is an integer called the order of magnitude .
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