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Young modulus of elasticity of brass is ...

Young modulus of elasticity of brass is `10^(11)N//m^(2)`. On pressing the rod of length 0.1 m. and cross section area `1 cm^(2)` made from brass with a force of 10 N. along its length, the increase in its energy will be……………………

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Knowledge Check

  • A wire of length 10 m and cross-section are 10^(-6) m^(2) is stretched with a force of 20 N. If the elongation is 1 mm, the Young's modulus of material of the wire will be

    A
    `10^(10)N//m^(2)`
    B
    `10^(11)N//m^(2)`
    C
    `2xx10^(10)N//m^(2)`
    D
    `2xx10^(11)N//m^(2)`

  • If young's modulus of steel is 2xx10^(11)N//m^(2) , then the force required to increase the length of a wire of cross section 1 cm^(2) by 1% will be

    A
    `10^(5)N`
    B
    `2xx10^(5)N`
    C
    `10^(4)N`
    D
    `2xx10^(4)N`

  • A unifrom steel rod of length 1m and area of cross-section 20 cm^(2) is hanging from a fixed support. Find the increases in the length of the rod.

    A
    `1.923xx10^(-5)cm`
    B
    `2.923xx10^(-5)cm`
    C
    `1.123xx10^(-5)cm`
    D
    `3.123xx10^(-5)cm`

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