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Coefficient of linear expansion of brass...

Coefficient of linear expansion of brass and steel rods are `a_1` and `a_2`. Lengths of brass and steel rods are`l_1` and `l_2` respectively. If `(l_2 -l_1)` is maintained same at all temperatures, which one of the following relations holds good?

A

`alpha_1l_2=alpha_2l_1`

B

`alpha_1 l_2^2=alpha_2l_1^2`

C

`alpha_1^2l_1=alpha_2^2 l_2`

D

`alpha_1l_1=alpha_2l_2`

Text Solution

Verified by Experts

The correct Answer is:
D
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