An aluminium measuring rod, which is correct at `5^@C` measures the length of a line as 80 cm at `45^@C` If thermal coefficient of linear expansion of aluminium is `2.50xx10^(-4)//^@C`, the correct length of the line is:

An aluminium rod of length 50cm is heated so that its temperature increases from 20^(@)C" to "80^(@)C . If the linear coefficient of expansion of aluminium is 24xx10^(-6)//""^(@)C find the increase in the length of the aluminium rod.

An iron bar of length 10 m is heated from 0^@C " to " 100^@C . If the coefficient of linear thermal expansion of iron is 10xx10^(-6) .^@C^(-1) , then increase in the length of bar (in cm ) is

An iron bar of length 10 m is heated from 0^@C " to " 100^@C . If the coefficient of linear thermal expansion of iron is 10xx10^(-6) .^@C^(-1) , then increase in the length of bar (in cm ) is

An aluminium rod of length 50cm is heated so that its temperature increases from 20^(@)C" to "80^(@)C . If the linear coefficient of expansion of aluminium is 24 xx 10^(-6)//""^(@)C find the increase in the length of the aluminium rod.

An aluminium rod of length 50cm is heated so that its temperature increases from 20^(0) C. to 80^(0) C. If the linear coefficient of expansion of aluminium is 24 xx 10^(-6)//^(0) C find the increase in the le,igth of the aluminium rod.

An aluminium rod and iron rod show 1.5 m difference in their lengths when heated at all temperature. What are their lengths at 0 ^@C if coefficient of linear expansion for aluminium is 24.5 xx 10^-6 //^@C and for iron is 11.9 xx 10^-6 //^@C