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Two rods of length l(1) and l(2) are mad...

Two rods of length `l_(1)` and `l_(2)` are made of material whose coefficient of linear expansion are `alpha_(1)` and `alpha_(2)` , respectively. The difference between their lengths will be independent of temperatiure if `l_(1)//l_(2)` is to

A

`l_1/l_2= alpha_1/alpha_2`

B

`l_1/l_2=alpha_2/alpha_1`

C

`l_2^2alpha_1= l_1^2alpha_2`

D

`(alpha_1^2)/(l_1)=(a_2^2)/l_2`

Text Solution

Verified by Experts

The correct Answer is:
B
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