Question on: JAMB Physics - 1992
A bridge made of steel is 600m long. What is the daily variation in its length if the night-time and daytime temperatures are 10oC and 35oC respectively. The linear expansivity of steel is 0.000012C-1
A
0.18cm
B
1.80cm
C
18.00cm
D
1800cm
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Correct Option: A
\(\alpha\) = \(\frac{extension}{L\Delta\theta}\)
0.000012 = \(\frac{e}{600 \times (35 - 10}\)
= 0.18cm
0.000012 = \(\frac{e}{600 \times (35 - 10}\)
= 0.18cm
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