Physical World Units And Measurements Ques 34
34. Taking into account of the significant figures, what is the value of $9.99$ $ m-0.0099$ $ m$ ?
[2020]
(a) $9.98 $ $m$
(b) $9.980 $ $m$
(c) $9.9 $ $m$
(d) $9.9801 $ $m$
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Answer:
Correct Answer: 34.(a)
Solution:
- (a) In subtraction the number of decimal places in the result should be equal to the number of decimal places of that term in the operation which contain lesser number of decimal places.
$9.99-0.0099 = 9.9801$
As the least number of decimal places is $3 $. So, answer should be $9.98$ $m$.
BETA
