A measuring tape amde of steel is calibrated at `5^(@)C` . If the coefficient of linear expansion of steel `10^(-5)//^(@)C` . If the coefficinet of linear expansion of steel `10^(-5)//^(@)C` , the percent error in measurement at `40^(@)C` is

Coefficient of areal expansion of a solid is 2xx10^(-5).^(@)C^(-1) . Calculate its coefficient of linear expansion.

Coefficient of areal expansion of a solid is 2xx10^(-5).^(@)C^(-1) . Calculate its coefficient of linear expansion.

(a) The brass scale of a barometer gives correct reading at 0^(@)C . Coefficient of linear expansion of brass is 2.0xx10^(-5)//^(@)C . The barometer reads 75cm at 27^(@)C . What is the atmospheric pressure at 27^(@)C ? (b) A barometer reads 75.0cm on a steel scale. The room temperature is 30^(@)C . The scale is correctly graduated for 0^(@)C . The coefficient of linear expansion of steel is alpha=1.2xx10^(-5)//^(@)C and the coefficient of volume expansion of mercury is gamma=1.8xx10^(-4)//^(@)C . Find the correct atmospheric pressure.

(a) The brass scale of a barometer gives correct reading at 0^(@)C . Coefficient of linear expansion of brass is 2.0xx10^(-5)//^(@)C . The barometer reads 75cm at 27^(@)C . What is the atmospheric pressure at 27^(@)C ? (b) A barometer reads 75.0cm on a steel scale. The room temperature is 30^(@)C . The scale is correctly graduated for 0^(@)C . The coefficient of linear expansion of steel is alpha=1.2xx10^(-5)//^(@)C and the coefficient of volume expansion of mercury is gamma=1.8xx10^(-4)//^(@)C . Find the correct atmospheric pressure.

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 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:

In figure which strip (brass or steel) has higher coefficient of linear expansion.

At 50^(@)C , a brass rod has a length 50 cm and a diameter 2 mm . It is joined to a steel rod of the same length and diameter at the same temperature . The change in the length of the composite rod when it is heated to 250^(@)C is (Coefficient of linear expansion of brass = 2.0 xx 10^(-5)"^(@) C^(-1) , coefficient of linear expansion of steel = 1.2 xx 10^(-5) "^(@) C^(-1) )