A brass rod is 2m long at a certain temperature... - JAMB Physics 1991 Question
A brass rod is 2m long at a certain temperature. What is the length for a temperature rise of 100K, if the expansivity of brass is 18 x 10-6K-1?
A
2.0036m
B
2.0018cm
C
2.1800
D
2.0360m
correct option: a
(\alpha) = (\frac{L_2 - L_1}{L_1 \times \Delta \theta})
18 x 10-6 = (\frac{L_2 - 2}{2\times 100})
L = 2.0036m
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