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An iron scale is correct at 0^(@)C an at...

An iron scale is correct at `0^(@)C` an at this temperature, a zinc rod measures `1m` on this scale. What will be the length of the zinc rod as measured by the iron scale when both the are at `100^(@)C`? (Linear expansivity of zinc `=126xx10^(-6)K^(-1)` and linear expansivity of iron `=12x10^(-6)K^(-1)`)

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The correct Answer is:
`1.0014cm`
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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 .

A circular hole in an aluminium plate has a diameter of 4cm at 0^(@)C . What is its diameter when the temperature of the plate is raised to 100^(@)C ? (Linear expansivity of aluminium =23xx10^(-6)K^(-1) )

The ratio of densites or iron at 10^@C is (alpha of iron = 10xx10^(-6), .^@C^(-1))

A circular hole in an aluminium plate is 2.50cm at 0^(@)C . What is its diameter when it temperature is raised to 100^(@)C ? (The linear expansivity of aluminium =23xx10^(-6)K^(-1))

A steel scale measures the length of a copper wire as 80.0 cm when both area at 20^(@)C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40^(@)C ? (Given alpha_("steel") = 11 xx 10^(-6) per ^(@)C and alpha_("copper") = 17 xx 10^(-6) per^(@)C )

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) )

If a clock with an uncompensated pendulum of steel keeps correct time at 15^(@)C how many seconds would it lose is 24 hours at a temperature of 25^(@) ? (Linear expansivity of steel =12xx10^(-6)K^(-1) )

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) .

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  10. An iron scale is correct at 0^(@)C an at this temperature, a zinc rod ...

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