Two thin metal strips, one of brass and the other of iron are fastended together parallel to each other. Thickness of each strip is `2 mm`. If the strips are of equal length at `0^(@)C`. The radius of the are formed by the bimetaalic strip when heated to `80^(@)C` is (Coefficient of linear expansion of brass`=19xx10^(-6)//^(@)C &`
of iron=`12xx10^(-6)//^(@)C)`.

A brass disc has a hole of diameter 2.5 cm at 27^(@)C . Find the change in the diameter of the hole of the disc when heated to 327^(@)C . Given coefficient of linear expansion of brass = 1.9 xx 10^(-5) .^(@)C^(-1)

The coefficient of linear expansion of a metal rod is 12 xx 10^(-6//0)C , its value in per ^(0)F

A brass scale is graduated at 10^@C . What is the true length of a zinc rod which measures 60.00 cm on this scale at 30^@C ? Coefficient of linear expansion of brass =18xx10^-6K^-1 .

An iron sphere has a radius 8 cm at a temperature of 0^(@)C . Calculate the change in volume of the sphere if is temperature is raised to 80^(@)C . Coefficient of liner expansion of iron =11xx10^(-6) .^(@)C^(-1) .

Two identical thin metal strips one of aluminium and the other of iron are riveted together to form a bimetallic strip. The temperature is raised by 50^(@)C . If the central planes of the two strips are separated by 2nm and the coefficients of thermal expansion of aluminium and iron are respectively 30 xx 10^(-6)//^(@)C and 10 xx 10^(-6)//^(@)C the average radius of curvature of the bimetallic strip is about

A thin brass sheet at 20^(@)C and a thin steel sheet at 30^(@)C have the same surface area. The common tempreture at which both would have the same area is (Coefficient of linear expansion for brass and steel are respectively, 19xx10^(-6)//^(@)C are 11xx10^(-6)//^(@)C )

A steel scale is correct at 0^(@)C . The length of a brass tube measured by it at 40^(@)C is 4.5m . The correct length of the tube at 0^(@)C is (Coefficients of linear expansion of steel and brass are 11 xx 10^(-6//@)C and 19 xx 10^(-6//@)C respectively).

An iron sphere has a radius of 10 cm at a temperature of 0^(@)C . Calculate the change in the volume of the sphere, if it is heated to 100^(@)C . Coefficient of linear expansion of iron = 11 xx 10^(-6).^(@)C^(-1) .

A brass rod of length 50 cm and diameter 3.0 cm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at 250^(@)C , if the original length are at 40.0^(@)C ? (Coefficient of linear expansion of brass =2.0 xx 10^(-5)//^(@)C, steel = 1.2 xx 10^(-5)//^(@)C

A barometer having a brass scale reads 77.24 cm at a temperature of 20^(@)C . The scale is graduated to be accurate at 0^(@)C . What would be the readint at 0^(@)C ? Coefficient of cubical expansion of mercury =18xx10^(-5).^(@)C^(-1) and linear expansion of brass -19xx10^(-6).^(@)C^(-1)