Physics
JAMB 1993
A metal rod 800mm long is heated from 10
oC to 95
oC. If it expands by 1.36mm, the linear expansivity of the metal is
-
A.
2.0 x 102K-1
-
B.
2.0 x 102K-1
-
C.
5.0 x 10-3K-1
-
D.
2.0 x 10-5K-1
Correct Answer: Option D
Explanation
a = \(\frac{1.36}{800 \times (95 - 10)}\)
= 2.0 x 10-5K-1
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