Significant Figures and Rounding off Numbers
PHXI02:UNITS AND MEASUREMENTS

367632 The radius of the earth and the radius of orbit around the sun are 6371 \(km\) and \(149 \times {10^6}km\) respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by

1 \({10^3}\)
2 \({10^2}\)
3 \({10^4}\)
4 \({10^5}\)
PHXI02:UNITS AND MEASUREMENTS

367633 The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give:

1 2.75 and 2.74
2 2.74 and 2.73
3 2.75 and 2.73
4 2.74 and 2.74
PHXI02:UNITS AND MEASUREMENTS

367634 The radius of a disc is 1.2 \(cm\). What is its area with proper number of significant figures?

1 \(4.5\,c{m^2}\)
2 \(4.521\,c{m^2}\)
3 \(4.52\,c{m^2}\)
4 \(4.5216\,c{m^2}\)
PHXI02:UNITS AND MEASUREMENTS

367635 The mass and volume of a body are 4.237 \(g\) and \(2.5c{m^3}\) respectively. The density of material of the body in correct significant figures is

1 \(1.7g\,c{m^{ - 3}}\)
2 \(1.69g\,c{m^{ - 3}}\)
3 \(1.6048g\,c{m^{ - 3}}\)
4 \(1.695g\,c{m^{ - 3}}\)
PHXI02:UNITS AND MEASUREMENTS

367636 What is the number of significant figures in \(0.310 \times {10^3}?\)

1 \(3\)
2 \(2\)
3 \(6\)
4 \(4\)
PHXI02:UNITS AND MEASUREMENTS

367632 The radius of the earth and the radius of orbit around the sun are 6371 \(km\) and \(149 \times {10^6}km\) respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by

1 \({10^3}\)
2 \({10^2}\)
3 \({10^4}\)
4 \({10^5}\)
PHXI02:UNITS AND MEASUREMENTS

367633 The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give:

1 2.75 and 2.74
2 2.74 and 2.73
3 2.75 and 2.73
4 2.74 and 2.74
PHXI02:UNITS AND MEASUREMENTS

367634 The radius of a disc is 1.2 \(cm\). What is its area with proper number of significant figures?

1 \(4.5\,c{m^2}\)
2 \(4.521\,c{m^2}\)
3 \(4.52\,c{m^2}\)
4 \(4.5216\,c{m^2}\)
PHXI02:UNITS AND MEASUREMENTS

367635 The mass and volume of a body are 4.237 \(g\) and \(2.5c{m^3}\) respectively. The density of material of the body in correct significant figures is

1 \(1.7g\,c{m^{ - 3}}\)
2 \(1.69g\,c{m^{ - 3}}\)
3 \(1.6048g\,c{m^{ - 3}}\)
4 \(1.695g\,c{m^{ - 3}}\)
PHXI02:UNITS AND MEASUREMENTS

367636 What is the number of significant figures in \(0.310 \times {10^3}?\)

1 \(3\)
2 \(2\)
3 \(6\)
4 \(4\)
PHXI02:UNITS AND MEASUREMENTS

367632 The radius of the earth and the radius of orbit around the sun are 6371 \(km\) and \(149 \times {10^6}km\) respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by

1 \({10^3}\)
2 \({10^2}\)
3 \({10^4}\)
4 \({10^5}\)
PHXI02:UNITS AND MEASUREMENTS

367633 The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give:

1 2.75 and 2.74
2 2.74 and 2.73
3 2.75 and 2.73
4 2.74 and 2.74
PHXI02:UNITS AND MEASUREMENTS

367634 The radius of a disc is 1.2 \(cm\). What is its area with proper number of significant figures?

1 \(4.5\,c{m^2}\)
2 \(4.521\,c{m^2}\)
3 \(4.52\,c{m^2}\)
4 \(4.5216\,c{m^2}\)
PHXI02:UNITS AND MEASUREMENTS

367635 The mass and volume of a body are 4.237 \(g\) and \(2.5c{m^3}\) respectively. The density of material of the body in correct significant figures is

1 \(1.7g\,c{m^{ - 3}}\)
2 \(1.69g\,c{m^{ - 3}}\)
3 \(1.6048g\,c{m^{ - 3}}\)
4 \(1.695g\,c{m^{ - 3}}\)
PHXI02:UNITS AND MEASUREMENTS

367636 What is the number of significant figures in \(0.310 \times {10^3}?\)

1 \(3\)
2 \(2\)
3 \(6\)
4 \(4\)
PHXI02:UNITS AND MEASUREMENTS

367632 The radius of the earth and the radius of orbit around the sun are 6371 \(km\) and \(149 \times {10^6}km\) respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by

1 \({10^3}\)
2 \({10^2}\)
3 \({10^4}\)
4 \({10^5}\)
PHXI02:UNITS AND MEASUREMENTS

367633 The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give:

1 2.75 and 2.74
2 2.74 and 2.73
3 2.75 and 2.73
4 2.74 and 2.74
PHXI02:UNITS AND MEASUREMENTS

367634 The radius of a disc is 1.2 \(cm\). What is its area with proper number of significant figures?

1 \(4.5\,c{m^2}\)
2 \(4.521\,c{m^2}\)
3 \(4.52\,c{m^2}\)
4 \(4.5216\,c{m^2}\)
PHXI02:UNITS AND MEASUREMENTS

367635 The mass and volume of a body are 4.237 \(g\) and \(2.5c{m^3}\) respectively. The density of material of the body in correct significant figures is

1 \(1.7g\,c{m^{ - 3}}\)
2 \(1.69g\,c{m^{ - 3}}\)
3 \(1.6048g\,c{m^{ - 3}}\)
4 \(1.695g\,c{m^{ - 3}}\)
PHXI02:UNITS AND MEASUREMENTS

367636 What is the number of significant figures in \(0.310 \times {10^3}?\)

1 \(3\)
2 \(2\)
3 \(6\)
4 \(4\)
PHXI02:UNITS AND MEASUREMENTS

367632 The radius of the earth and the radius of orbit around the sun are 6371 \(km\) and \(149 \times {10^6}km\) respectively. The order of magnitude of the diameter of the orbit is greater than that of earth by

1 \({10^3}\)
2 \({10^2}\)
3 \({10^4}\)
4 \({10^5}\)
PHXI02:UNITS AND MEASUREMENTS

367633 The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give:

1 2.75 and 2.74
2 2.74 and 2.73
3 2.75 and 2.73
4 2.74 and 2.74
PHXI02:UNITS AND MEASUREMENTS

367634 The radius of a disc is 1.2 \(cm\). What is its area with proper number of significant figures?

1 \(4.5\,c{m^2}\)
2 \(4.521\,c{m^2}\)
3 \(4.52\,c{m^2}\)
4 \(4.5216\,c{m^2}\)
PHXI02:UNITS AND MEASUREMENTS

367635 The mass and volume of a body are 4.237 \(g\) and \(2.5c{m^3}\) respectively. The density of material of the body in correct significant figures is

1 \(1.7g\,c{m^{ - 3}}\)
2 \(1.69g\,c{m^{ - 3}}\)
3 \(1.6048g\,c{m^{ - 3}}\)
4 \(1.695g\,c{m^{ - 3}}\)
PHXI02:UNITS AND MEASUREMENTS

367636 What is the number of significant figures in \(0.310 \times {10^3}?\)

1 \(3\)
2 \(2\)
3 \(6\)
4 \(4\)