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[" Q.4The coefficient of linear expansio...

[" Q.4The coefficient of linear expansion of steel and "],[" brass are "11times10^(-6)/^(@)C" and "19times10^(-6)%C],[" respectively.If their difference in lengths at all "],[" temperatures has to be kept constant at "30cm,],[" their lengths at "0^(@)C" should be - "],[" (1) "71.25cm" and "41.25cm],[" (2) "82cm" and "52cm],[" (3) "92cm" and "62cm],[" (4) "62.25cm" and "32.25cm]

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