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[" 5.A steel scale measures the length of a copper "2" ."],[" wire as "80.0cm" ,when both are at "20^(@)C" (the "],[" calibration temperature for scale).What would "],[" be the scale read for the length of wire when "],[" both are at "40^(@)C" ? (Given a steel "=11times10^(-8)],[" per^@ C " and " "a_(" copper ")=17times10^(-6)" per "^(@)C" ) "]

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A steel scale measures the length of a copper wire as 80.0 cm when both area at 20^(@)C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40^(@)C ? (Given alpha_("steel") = 11 xx 10^(-6) per ^(@)C and alpha_("copper") = 17 xx 10^(-6) per^(@)C )

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A steel scale measures the length of a copper rod as l_(0) when both are at 20^(@)C , which is the calibration temperature for the scale . The scale reading when both are at 40^(@)C , is :-

A steel scale measures the length of a copper rod as l_(0) when both are at 20^(@)C , which is the calibration temperature for the scale . The scale reading when both are at 40^(@)C , is :-

A steel scale measures the length of a copper rod as l_(0) when both are at 20^(@)C , which is the calibration temperature for the scale . The scale reading when both are at 40^(@)C , is :-