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Determine the lengths of an iron rod and...

Determine the lengths of an iron rod and copper ruler at `0^@` C if the difference in their lengths at `50^@`C and `450^@`C is the same and is equal to 2 cm. the coefficient of linear expansion of iron`=12xx10^(-6)//K` and that of copper`=17xx10^(-6)//K`.

A

20.06m, 20.08m

B

21.0 m, 7.00 m

C

60.30 cm, 10.10 m

D

11.09 m, 15.10 m

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A
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