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Coefficient of linear expansion of iron is `12 times 10^(-6@)C^(-1)` - explain the statement.

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The length of a zinc rod, when heated from 20^(@)C " to " 80^(@)C , increase by 0.6 cm. If the coefficient of linear expansion of zinc is 27 times 10^(-6@)C^(-1) , what is the initial length of the rod?

A piece of metal weighs 50g in air. It weighs 45g when immersed in a liquid at 25^(@)C , and 45.1 g" at " 100^(@)C. If the coefficient of linear expansion of the metal is 12 times 10^(-6@)C^(-1) , find the coefficient of real expansion of the liquid.

Knowledge Check

  • Coefficient of linear expansion of brass is 19 times 10^(-6@)C^(-1) . If the area of a circular brass disc at 0^(@)C is 25 cm^(2) , then at 80^(@)C its area will be

    A
    25.038 `cm^(2)`
    B
    25.076 `cm^(2)`
    C
    25.114 `cm^(2)`
    D
    25.38 `cm^(2)`

  • The coefficient of volume expansion of mercury is 18 times 10^(-5@)C^(-1) and the coefficient of linear expansion of copper and glass are 17 times 10^(-6@)C^(-1) and 9 times 10^(-6@)C^(-1) respectively. If mercury is kept first in the copper vessel and then in the glass vessel, then

    A
    coefficient of apparent expansion of mercury in the first case will be less
    B
    coefficient of apparent expansion of mercury in the first case will be greater
    C
    coefficient of real expansion of mercury in the first case will be less
    D
    coefficient of real expansion of mercury in the first case will be greater

    • Similar Questions

    Explore conceptually related problems

    A brass rod has a length of 150 cm at 40^(@)C . What will be its length at 100^(@)C ? The coefficient of linear expansion of brass is 18 times 10^(-6@)C^(-1) .

    A liquid has a coefficient of apparent expansion, 18 times 10^(-5@)C^(-1) for an iron container, and 14.46 times 10^(-5@)C^(-1) for an aluminium container. If the coefficient of linear expansion of aluminium is 2.38 times 10^(-5@)C^(-1) , find that of iron.

    The lengths of an iron and a zinc rod at 0^(@)C are 25.55 cm and 25.5 cm respectively. At what temperature will their lengths be equal? Coefficients of linear expansion of iron and zinc are 10 times 10^(-6@)C^(-1) and 30 times 10^(-6@)C^(-1) respectively.

    Coefficient of linear expansion of platinum is 9 times 10^(-6@)C^(-1) . What will be the value of this coefficient when the temperature is expressed in Fahrenheit unit?

    The coefficient of linear expansion of a solid is-

    The volume of a metal sphere increases by 0.24% when its temperature is raised by 40^(@)C . The coefficient of linear expansion of the metal is n times 10^(-5@)C^(-1) . Find the value of n.

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