Physics
WAEC 1998
If the cubic expansivity of brass between 27
oC and 100
oC is 5.7 x 10
-5K
-1, What is its linear expansivity?
-
A.
2.85 x 10-5K-1
-
B.
1.90 x 10-5K-1
-
C.
1.86 x 10-5K-1
-
D.
1.70 x 10-5K-1
-
E.
1.63 x 10-5K-1
Correct Answer: Option B
Explanation
\(\alpha\) = \(\frac{\Delta}{3} = \frac{5.7 \times 10^{-5}}{3}\)
= 1.90 x 10-5K-1
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