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Two metal rods has lengths in the ratio ...

Two metal rods has lengths in the ratio `3:2` and coefficient of linear expansion are in the ratio `2:3`. If they are heated from `35^@ C` to `95^@C`, then ratio of their linear expansion is

A

`1:2`

B

`2:1`

C

`1:1`

D

`1:3`

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