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    7.

    The dimensions of power are

    A

    M1L2T3{M^1}{L^2}{T^{ - 3}}

    B

    M2L1T2{M^2}{L^1}{T^{ - 2}}

    C

    M1L2  T1{M^1}{L^2}\;{T^{ - 1}}

    D

    M1L1T2{M^1}{L^1}{T^{ - 2}}

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    8.

    The dimensions of K in the equation W=12  Kx2W = \frac{1}{2}\;K{x^2} is

    A

    M1L0T2{M^1}{L^0}{T^{ - 2}}

    B

    M0L1T1{M^0}{L^1}{T^{ - 1}}

    C

    M1L1T2{M^1}{L^1}{T^{ - 2}}

    D

    M1L0T1{M^1}{L^0}{T^{ - 1}}

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    10.

    Coefficient of thermal conductivity has the dimensions

    A

    [MLT3K1]\left[ {{\rm{ML}}{{\rm{T}}^{ - 3}}{{\rm{K}}^{ - 1}}} \right]

    B

    [ML3T3K2]\left[ {{\rm{M}}{{\rm{L}}^3}{{\rm{T}}^3}{{\rm{K}}^2}} \right]

    C

    [ML3T3K2]\left[ {{\rm{M}}{{\rm{L}}^3}{{\rm{T}}^{ - 3}}{{\rm{K}}^{ - 2}}} \right]

    D

    [M2L3T3K2]\left[ {{{\rm{M}}^2}{{\rm{L}}^3}{{\rm{T}}^{ - 3}}{{\rm{K}}^2}} \right]

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