1.

A thin brass sheet at 10^(@)C and a thin stell sheet at 20^(@)C have the same surface area. The common temperature at which both would have the same area is (coefficient of liner expansion for brass and steel are respectively 19xx10^(-6//@)C and 11xx10^(-6//@)C).

Answer»

`-3.75^(@) C`
`-2.75^(@) C`
`2.75^(@) C`
`3.75^(@) C`

ANSWER :A


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