Physics
JAMB 1982
A rod of length 10cm is heated through 100
oC and its final length is 10.26cm. What is the co-efficient of linear expansion of the rod?
-
A.
0.026 per degree centigrade
-
B.
0.00026 per degree centigrade
-
C.
0.26 per degree centigrade
-
D.
1.0026 per degree centigrade
-
E.
0.0026 per degree centigrade
Correct Answer: Option B
Explanation
\(\alpha\) = \(\frac{L_2 - L_1}{L_1 \times \theta}\)
= \(\frac{10 - 26 - 10}{10 \times 100}\)
= 2.6 x 10-4oC
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