MCQ
Given $P = 0.0030\,m$, $Q = 2.40\,m$, $R = 3000\,m$, Significant figures in $P,\,Q$ and $R$ are respectively
- A$2, 3, 4$
- ✓$2, 3, 1$
- C$4, 2, 1$
- D$4, 2, 3$
✓
Answer
Correct option: B.
$2, 3, 1$
b
(b) Given $P = 0.0030\,m$, $Q = 2.40\,m$ & $R = 3000\,m$ In $P(0.0030)$ initial zeros after the decimal point are not significant. Therefore, significant figures in $P(0.0030)$ are $2$. Similarly in $Q(2.40)$ significant figures are $3$ as in this case final zero is significant. In $R = (3000)$ all the zeroes are significant hence, in $R$ significant figures are $4$.
(b) Given $P = 0.0030\,m$, $Q = 2.40\,m$ & $R = 3000\,m$ In $P(0.0030)$ initial zeros after the decimal point are not significant. Therefore, significant figures in $P(0.0030)$ are $2$. Similarly in $Q(2.40)$ significant figures are $3$ as in this case final zero is significant. In $R = (3000)$ all the zeroes are significant hence, in $R$ significant figures are $4$.
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