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The density of a material in SI units is...

The density of a material in SI units is `128 kg m^(-3)` In certain units in which the unit of length is 25 cm and the unit of mass is 100 g, the numerical value of density of the material is_____.

Text Solution

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`rho = m/V [rho] = [ ML^(-3) ]`
` 128 (1kg) (1m)^(-3) = x ( 100/1000 kg ) (25/100m)^(-3) rArr x = 128 xx 1000/100 xx 4^(-3) = (128 xx 10)/(64) = 20`
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Knowledge Check

  • The density of a material in CGS system of units is 4 g cm^(-3) . In a system of units in which unit of length is 10 cm and unit of mass is 100 g, the value of density of material will be

    A
    0.04
    B
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    D
    400

  • The density of a material in CGS system of units is 4 g cm^(-3) . In a system of units in which unit of length is 10 cm and unit of mass is 100 g, the value of density of material will be

    A
    0.04
    B
    0.4
    C
    40
    D
    400

  • the density of a material is 8 g/cc. In a system in which units of length is 5 cm and of mass is 20 g, the density of material is :

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    B
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    D
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