A metal rod 800mm long is heated from 10oC to 9... - JAMB Physics 1993 Question
A metal rod 800mm long is heated from 10oC to 95oC. 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
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Correct Option: D
a = (\frac{1.36}{800 \times (95 - 10)})
= 2.0 x 10-5K-1
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