A steel tape 1m long is correctly calibrated for a temperature of `27^@C`. The length of a steel rod measured by this fape is found to be 63cm on a hot day when the temp. is`45^@C`. What is the actual length of the steel rod on that day?

A steel tape 1 m long is correctly calibrated for a temperature of 27.0 ""^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 ""^(@)C . What is the actual length of the steel rod on that day? What is the length of the same steel rod on a day when the temperature is 27.0^(@)C ? Coefficient of linear expansion of steel =1.20 times 10^(-5)K^(-1) .

A metal scale measures correct reading at 25^(@)C. A rod is measured to be 80 cm by the scale at 15^(@)C . What is the actual length of the rod? (alpha=15 times 10^(-6@)C^(-1))

A steel scale gives correct reading at 10^(@)C . If the length of a rod is measured with the help of that scale at 30^(@)C then the measured length will be

A steel scale is error-less at 50^(@)F . Using the scale, the length of a brass rod is found to be 1.5 m at 50^(@)C . What is the true length of the rod at 100^(@)C ? (Coefficients of linear expansion of steel and brass are 11.2 times 10^(-6@)C^(-1) " and " 18 times 10^(-6@)C^(-1) respectively.)

A man has an antique pendulum clock of 1832 which bears the signature of the purchaser. He does not want to replace it in the fond memory of his great-grandparents. It ticks off one second in each side to side swing. It keeps correct time at 20^(@)C . The pendulum shaft is made of steel and its mass can be ignored as compared to the mass of the bob. Linear expansion coefficient of steel is 1.2xx10^(-5@)C^(-1) What is the fractional change in length if the shaft is cooled to 10^(@)C ?