JAMB - Physics (1991 - No. 14)

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?
2.0036m
2.0018cm
2.1800
2.0360m

Explanation

\(\alpha\) = \(\frac{L_2 - L_1}{L_1 \times \Delta \theta}\)

18 x 10-6 = \(\frac{L_2 - 2}{2\times 100}\)

L = 2.0036m

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