A. 100.08m
B. 100.04m
C. 99.96m
D. 99.92m
Correct Answer:
Option D – 99.92m
Explanation
L2=L1+α(θ2−θ1)
= 100 + 0.00002(-10-30) = 99.92
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![A metal rod of length 100cm is heated through 100°C, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10^-6K-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A metal rod of length 100cm is heated through 100°C, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10^-6K-1]")