[" An iron rod of length "50cm" is joined at an end to "],[" copper rod of length "100cm" at "20^(@)C" .Find the "],[" length of the system at "100^(@)C(" in "cm).],[(alpha_(" iron ")=12times10^(-6)/^(@)C" and "alpha_(" copper ")=17times10^(-6)/^(@)C.)]

An iron rod of length 50cm is joined at an end to copper rod of length 100cm at 20^(@)C . Find the length of the system at 100^(@)C and average coefficient of linear expansion of the system. (alpha_("iron")=12xx10^(-6)//""^(@)Candalpha_("copper")=17xx10^(-6)//""^(@)C.)

An iron of length 50cm is joined at an end to copper rod to length 100cm at 20^(0)C. Find the length of the system at 100^(0)C and average coefficient of linear expansion of the systeam. (*_(iron) = 12 xx 10^(-6 //0)C and*_(copper) = 17 xx 10^(-6 //0)C.)

The difference in lengths of an iron and a copper rod, both at 50^(@)C " and " 450^(@)C , is 2 cm. What are the lengths of the two rods at 0^(@)C ? [Given, alpha_(Fe)=12 times 10^(-6@)C^(-1) " and " alpha_(Cu)=17 times 10^(-6@)C^(-1) ]

An iron rod of length 50cm is joined at an end to an aluminium rod of length 100cm . All measurements refer to 20^(@)C . Find the length of the composite system at 100^(@)C and its average coefficient of linear expansion. The coefficient of linear expansion of iron and aluminium are 12xx10^(-6)//^(@)C and 24xx10^(-6)//^(@)C respectively.

A brass rod and a copper rod have same difference in length at all temperatures. If the difference in their length is 10 cm at 0^(@)C find the length of brass and copper roeds. (alpha_("brass")=19xx10^(-6)" "^(@)Candalpha_("copper")=17xx10^(-6)" "^(@)C)

An iron rod of length 50 cm is joined at an end to an aluminum rod of length 100 cm. All measurements refer to 20^(@)C . The coefficients of linear expansion of iron and aluminum are 12xx10^(-6)//^(@)C and 24xx10^(-6)//^(@)C , respectively. The average coefficient of expansion of composite system is :

An iron rod of length 50 cm is joined at an end to an aluminum rod of length 100 cm. All measurements refer to 20^(@)C . The coefficients of linear expansion of iron and aluminum are 12xx10^(-6)//^(@)C and 24xx10^(-6)//^(@)C , respectively. The average coefficient of expansion of composite system is :