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Bars of two different metals are bolted ...

Bars of two different metals are bolted together , as shown in figure. The distance x does not change with temperature if :-

A

`(l_(A))/(l_(B))=(alpha_(A))/(alpha_(B))`

B

`(l_(A))/(l_(B))=(alpha_(B))/(alpha_(A))`

C

`(l_(A)^(2))/(l_(B)^(2))=(alpha_(A))/(alpha_(B))`

D

`(l_(A)^(2))/(l_(B)^(2))=(alpha_(B))/(alpha_(A))`

Text Solution

Verified by Experts

The correct Answer is:
B
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