Railway lines are laid with gaps to allow for expansion. If the gap betweeen steel rails 60 m long be 3.60 cm at `10^(@)C`, then at what temperature will the lines just touch? Coefficient of linear expansion of steel `=11xx10^(-6) .^(@)C^(-1)`.

Railway lines are laid with gaps to allow for expansion. If the gap betweeen steel rails 60 m long be 3.60 cm at 10^(@)C , then at what temperature will the lines just touch? Coefficient of linear expansion of steel =11//10^(-6) .^(@)C^(-1) .

Gaps are left while laying the railway lines in order to allow for expansion. The gap between steel rails of length 65 m is 3.56 cm at 15^@C . Calculate the temperature at which the rails will just touch each other. Take, O_("steel") = 1.1 xx 10^(-5)@C^(-1)

A copper bar is 80 cm long at 15^(@)C . What is the increase in length, when heated to 35^(@)C ? The coefficient of linear expansion for copper is 1.7 xx 10^(-5).^(@)C^(-1)

A clock with a steel pendulum gives accurate time at 30^@C . Calculate the fractional loss or gain in time if temperature changes to 50^@C . Coefficient of linear expansion of steel = 12 xx 10^(-6) ""^@C^(-1)

A metre scale is made up of steel and measures correct length at 16^C . What will be the percentage error if this scale is used (a) on a summer day when the temperature is 46^C and (b) on a winter day when the temperature is 6^C ? Coefficient of linear expansion of steel =11 xx 10^(-6) o^C^(-1) .

An iron sphere of radius 10 cm is at temperature , 10^(@)C . If the sphere is heated upto temperature 110^(@)C , find the change in the volume of the sphere coefficient of linear expansion of iron = 11 xx 10^(-6) .^(@)C^(-1)

An iron bar 10 cm in length is kept at 20^@C . If the coefficient of linear expansion of iron is alpha = 11 xx 10^(-6).^(@)C^(-1) , then at 19^(@)C it will be

A steel tape 1m long is correctly calibrated for a temperature of 27^(@)C . The length of a steel rod measured by this tape is found to be 63.0cm on a hot day when the temperature is 45.0^(@)C . What is the acutual 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 = 1.20xx10^(-5) .^(@)C^(-1) .

A steel meter scale is to be ruled so that millimeter intervals are accurate within about 5xx10^(-5) mm at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel =10xx10^(-6)K^(-1) )

In the construction of a flyover, steel girders of length 12 m are used to place one after another. How much gap should be left between the two at their junction so that in summers whenpeak temperature is about 48^(@)C , there should not be any compresion. Given that the construction is done in peak winters when temperature is 18^(@)C . Given that the coefficient of linear expansion of steel is 1.1xx10^(-5).^(@)C^(-1) .