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Is it possible to maintain a constant di...

Is it possible to maintain a constant difference in the lengths of a brass rod and a steel rod, at all temperatures?

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Explore conceptually related problems

Three rods of copper, brass and steel are welded logether to from a Y-shaped atructure The cross-sectional area of each rod is 4 cm^2 The end of copper rod is maintained at 100^@ C and the ends of the brass and steel rods at 80^@ Cand 60^@ C respectively Assume that there is no loss of heat from the lateral surface of the rods. The lengths of rods are : copper 46 cm brass 13 cm and steel 12 cm What is the heat current in the copper rod ? k(Cu)=0.92, k(steel)=0.12 and k(brass)= 0.26cal//cm -s- ^@C

A steel tape Im long is correctly calibrated for a temperature of 27.0 ^(@) C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0^(@) C .What is the actual 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 = 1.20 xx 10^(-5) K^(-1) .

Knowledge Check

  • The ratio of the length of a rod and its shadow is 1:sqr3 the altitude of sun is

    A
    `30^@
    B
    `45^@`
    C
    `60^@`
    D
    `90^@`

  • A rod of length l is given two velocities V and 2V in opposite directions at its two ends at right angles to the length. If m be the mass of the rod, its total kinetic energy is

    A
    `1/2mV^2`
    B
    `7/16mV^2`
    C
    `3/8mV^2`
    D
    `17/4mV^2`

  • Three rods of copper, Brass and Steel are welded together to form a Y-shaped structure. Area of cross-section of each rod = 4 cm^2 . End of copper rod is maintained at 100^@C where as ends of brass and steel rods are 46, 13 and 12 cms respectively. The rods are thermally insulated from surrounding except at ends. Thermal conductivities of copper, brass and steel are 0.92, 0.26 and 0.12 CGS units respectively. Rate of heat flow through copper rod is

    A
    `1.2 cal//s`
    B
    `2.4 cal//s`
    C
    `4.8 cal//s`
    D
    `6.0 cal//s`

    • Similar Questions

    Explore conceptually related problems

    A steel tape 1 m long is correctly calibrated for a temperature of 27.0 ""^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 ""^(@)C . What is the actual 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 =1.20 times 10^(-5)K^(-1) .

    The difference in lengths of two rods, made up of different materials, remains constant at all temperatures. Show that their lengths at 0^(@)C are inversely proportional to their coefficients of linear expansion.

    The difference in lengths of two rods, made up of different materials, remains constant at all temperatures. Show that their lengths at 0^(@)C are inversely proportional to their coefficients of linear expansion.

    The difference in lengths of two metal rods A and B is 40 cm at all temperatures. Calculate the lengths of the two rods if alpha of A = 12xx10^(-6)//^@C and alpha of B= 18xx10^(-6)//^@C .

    How does you relate the coefficient of linear expansion of a rod with length and temperature?

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