which one of the following are true for the thermal expansion coeffic

1.	which one of the following are true for the thermal expansion coefficient?
A.	αaluminium > αbrass> αcopper > αsteel
B.	αbrass > αaluminium > αcopper > αsteel
C.	αcopper > αsteel > αaluminium > αbrass
D.	αsteel > αaluminium > αbrass > αcopper
Answer» B. αbrass > αaluminium > αcopper > αsteel

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which one of the following are true for the thermal expansion coefficient?

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