459 The coefficient of volume expansion of brass is
54x10-6° C and that of iron is 36x10-6° C. If
they show same difference in length at all
temperatures their lengths are in the ratio
a) 3:2
b) 2:3
c) 9:4
d) 4:9
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3:2 I think 9:4
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Answer:
Explanation:
iran and brass expansion ratio at same temperature
iron:
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