Q. No.The number of significant figures in the numbers \(25.12,\) \(2009,\) \(4.156\) and \(1.217\times 10^{-4}\) is:
1. \(1\)
2. \(2\)
3. \(3\)
4. \(4\)
In which of the following, the number of significant figures is different from that in the others?
1. \(2.303~\mathrm{kg}\)
2. \(12.23~\mathrm{m}\)
3. \(0.002\times10^{5}~\mathrm{m}\)
4. \(2.001\times10^{-3}~\mathrm{kg}\)
The mass and volume of a body are \(4.237~\mathrm{g}\) and \(2.5~\mathrm{cm^3}\), respectively. The density of the material of the body in correct significant figures will be:
1. \(1.6048~\mathrm{g~cm^{-3}}\)
2. \(1.69~\mathrm{g~cm^{-3}}\)
3. \(1.7~\mathrm{g~cm^{-3}}\)
4. \(1.695~\mathrm{g~cm^{-3}}\)
What is the number of significant figures in \(0.310\times 10^{3}\)?
1. \(2\)
2. \(3\)
3. \(4\)
4. \(6\)
Each side of a cube is measured to be \(7.203\) \(\mathrm{m}.\) What are the total surface area and the volume respectively of the cube to appropriate significant figures?
| 1. | \(373.7~\mathrm{m^2}\) and \(311.3~\mathrm{m^3}\) |
| 2. | \(311.3~\mathrm{m^2}\) and \(373.7~\mathrm{m^3}\) |
| 3. | \(311.2992~\mathrm{m^2}\) and \(373.7147~\mathrm{m^3}\) |
| 4. | \(373.7147~\mathrm{m^2}\) and \(311.2992~\mathrm{m^3}\) |
If \(97.52\) is divided by \(2.54\), the correct result in terms of significant figures is:
| 1. | \( 38.4 \) | 2. | \(38.3937 \) |
| 3. | \( 38.394 \) | 4. | \(38.39\) |
The decimal equivalent of \(\frac{1}{20} \) up to three significant figures is:
| 1. | \(0.0500\) | 2. | \(0.05000\) |
| 3. | \(0.0050\) | 4. | \(5.0 \times 10^{-2}\) |
The numbers \(2.745\) and \(2.735\) on rounding off to \(3\) significant figures will give respectively,
| 1. | \(2.75\) and \(2.74\) | 2. | \(2.74\) and \(2.73\) |
| 3. | \(2.75\) and \(2.73\) | 4. | \(2.74\) and \(2.74\) |
Taking into account the significant figures, what is the value of \((9.99~\mathrm{m}-0.0099~\mathrm{m})\)?
| 1. | \(9.98\) m | 2. | \(9.980\) m |
| 3. | \(9.9\) m | 4. | \(9.9801\) m |
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