Physics

When the number 0.046508 is reduced to 4 significant figures, then it becomes :

$4.651 \times { 10 }^{ -2 }$

SOLUTION
$0.046508\approx 4.6508\times 10^{-2}$
$\downarrow$
5 significant digits
To have 4 significant digits
$\rightarrow 4.6508\approx 4.651$
(If the digit to be dropped is more than 5, then the preceding digit is raised by 1)
So, $0.046508\approx 4.651\times 10^{-2}$

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Single Correct Medium Published on 18th 08, 2020
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