Physics
JAMB 2013
A wire of length 100.0m at 30
o has linear expansive of 2x10
-5K
-1 Calculate the length of the wire at a temperature of - 10
oC
-
A.
100.08m
-
B.
100.04m
-
C.
99.96m
-
D.
99.92m
Correct Answer: Option D
Explanation
\(L_2 = L_1 + \alpha(\theta_2 - \theta_1)\)
= 100 + 0.00002(-10-30) = 99.92
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