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  4. Given P = 0.0030 m, Q = 2.40 m ,R = 3000 m Significant figures in P, Q and R are respectively

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Q. Given $P = 0.0030 \,m, Q = 2.40 \,m ,R = 3000\, m$ Significant figures in $P, Q$ and $R$ are respectively

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Solution:

Given $P = 0.0030 m, Q = 2.40 m$ and $R = 3000 m In P(0.0030)$ 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 $4$.