A rectangular metal block of volume 10 -6 m 3 at 273k is heated to
PHYSICSJAMB 1995
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
- A. 1.5%
- B. 1.1%
- C. 0.4%
- D. 0.1%
Correct Answer: B. 1.1%
Explanation
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%
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly.
Your email address will not be published. Required fields are marked *