A rectangular metal block of volume 10^-6m³ at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10^-5k^-1, the percentage change of it volume is

1.5%

1.1%

0.4%

0.1%

Correct answer is B

Y = \(\frac{\Delta V}{V \times \Delta \theta}\)

3 x 10^-5 x 1.2 = \(\frac{\Delta\ V}{10^{-6}\times\ (573 - 273)}\)

\(\Delta\)V = 1080 x 10^-11m³

%\(\Delta\)V = \(\frac{1080 \times\ 10}{10^{-6}}\) x 100

= 1.08%

\(\approx\) = 1.1%

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A rectangular metal block of volume 10-6m3 at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10-5k-1, the percentage change of it volume is

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A rectangular metal block of volume 10^-6m³ at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10^-5k^-1, the percentage change of it volume is