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    4.

    What is the dimensional formula of mc2m{c^2}, where the letters have their usual meanings?

    A

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

    B

    [ML0T0]\left[ {{\rm{M}}{{\rm{L}}^0}{{\rm{T}}^0}} \right]

    C

    [ML2T2]\left[ {{\rm{M}}{{\rm{L}}^2}{{\rm{T}}^{ - 2}}} \right]

    D

    [M1L3T6]\left[ {{{\rm{M}}^{ - 1}}{{\rm{L}}^3}{{\rm{T}}^6}} \right]

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    5.

    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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    8.

    A physical quantity of the dimensions of length that can be formed out of c, G and is [c is velocity of light, G is universal constant of gravitation and e is charge]

    A

    c2[Ge24πε0]1/2{c^2}{\left[ {G\frac{{{e^2}}}{{4\pi {\varepsilon _0}}}} \right]^{1/2}}

    B

    1c2[e2G4πε0]1/2\frac{1}{{{c^2}}}{\left[ {\frac{{{e^2}}}{{G4\pi {\varepsilon _0}}}} \right]^{1/2}}

    C

    1cGe24πε0\frac{1}{c}G\frac{{{e^2}}}{{4\pi {\varepsilon _0}}}

    D

    1c2[Ge24πε0]1/2\frac{1}{{{c^2}}}{\left[ {G\frac{{{e^2}}}{{4\pi {\varepsilon _0}}}} \right]^{1/2}}

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    9.

    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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    10.

    Dimension of R is

    A

    ML2T1M{L^2}{T^{ - 1}}

    B

    ML2T3A2M{L^2}{T^{ - 3}}{A^{ - 2}}

    C

    ML1T2M{L^{ - 1}}{T^{ - 2}}

    D

    None of these

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