Physics

By rounding off,  (a) $$20.96$$ and (b) $$0.0003125$$ to three significant figures, we get 


ANSWER

$$2.10 ; \ 3.12 \times 10^{-4}$$


SOLUTION
By rounding off, 20.96 becomes 21.0 and 0.0003125 becomes $$3.12\times 10^{-4} $$


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Single Correct Medium Published on 18th 08, 2020
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