A rod of length 10cm is heated through 100oC 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