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A sheet of brass is 50 cm long and 10 cm...

A sheet of brass is 50 cm long and 10 cm broad at `0^(@)C`. The area of the surface increases by `1.9 cm^(2)` at `100^(@)C`. Find the coefficient of linear expansion of bras.

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Knowledge Check

  • A sheet of brass is 100 cm long and 40 cm broad at 273 K. The area of the surface increase by 2 cm^(3)" at "100^(@)C . What is the coefficient of linear expansion of brass?

    A
    `5xx10^(-6)""^(@)C^(-1)`
    B
    `2.5xx10^(-6)""^(@)C^(-1)`
    C
    `3xx10^(-6)""^(@)C^(-1)`
    D
    `2xx10^(-6)""^(@)C^(-1)`

  • A brass sheet is 25 cm long and 8 cm breath at 0^(@) C . Its area at 100^(@)C is (alpha = 18 xx 10^(-6 // ^(@))C)

    A
    `207.2 cm^(2)`
    B
    `200.72 cm^(2)`
    C
    `272 cm^(2)`
    D
    `2000.72 cm^(2)`

  • A brass rod of length 50 cm and diameter 3.0 cm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at 250^(@)C , if the original length are at 40.0^(@)C ? (Coefficient of linear expansion of brass =2.0 xx 10^(-5)//^(@)C, steel = 1.2 xx 10^(-5)//^(@)C

    A
    `0.27 cm`
    B
    `0.34 cm`
    C
    `0.21 cm`
    D
    `0.18 cm`

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    When a glass block of volume 15,000 cm^3 is heated from 20^@C to 40^@C , its volume increases by 5 cm^3 . What is the coefficient of linear expansion of glass?

    An iron of length 50cm is joined at an end to copper rod to length 100cm at 20^(0)C. Find the length of the system at 100^(0)C and average coefficient of linear expansion of the systeam. (*_(iron) = 12 xx 10^(-6 //0)C and*_(copper) = 17 xx 10^(-6 //0)C.)

    The length of a rod increases from 50 cm to 50.12 cm, when its temperature is increased from 12^(@)C to 212^(@)C . Calculate its coefficient of liner expansion.

    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 .

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