1.

Steel rod at 40°C is observed to be 1 m long when measured by a brass scale which is correct at 0^(@) C. correct length of the steel rod at 0°C is( alpha_( "steel") = 12 xx 10^(-6) //1^(0) C and alpha_("Brass")= 19 xx 10^(-6)//1^(0) C )

Answer»

`99.89` CM
`98.99` cm
`99.97` cm
`89.6` cm

Answer :C


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