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    3.

    The dimensional formula for impulse is

    A

    [MLT1]\left[ {{\rm{ML}}{{\rm{T}}^{ - 1}}} \right]

    B

    [ML1T]\left[ {{\rm{M}}{{\rm{L}}^{ - 1}}{\rm{T}}} \right]

    C

    [M1LT1]\left[ {{{\rm{M}}^{ - 1}}{\rm{L}}{{\rm{T}}^{ - 1}}} \right]

    D

    [ML1T1]\left[ {{\rm{M}}{{\rm{L}}^{ - 1}}{{\rm{T}}^{ - 1}}} \right]

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    7.

    The dimensions of resistivity in terms of M,L,T and Q where Q stands for the dimensions of charge, is

    A

    ML3T1Q2M{L^3}{T^{ - 1}}{Q^{ - 2}}

    B

    ML3T2Q1M{L^3}{T^{ - 2}}{Q^{ - 1}}

    C

    ML2T1Q1M{L^2}{T^{ - 1}}{Q^{ - 1}}

    D

    MLT1Q1ML{T^{ - 1}}{Q^{ - 1}}

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    8.

    Dimension of electric current is

    A

    [M0L0T1Q]\left[ {{M^0}{L^0}{T^{ - 1}}Q} \right]

    B

    [ML2T1Q]\left[ {M{L^2}{T^{ - 1}}Q} \right]

    C

    [M2LT1Q]\left[ {{M^2}L{T^{ - 1}}Q} \right]

    D

    [M2L2T1Q]\left[ {{M^2}{L^2}{T^{ - 1}}Q} \right]

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