Related Questions

    1.

    A physical quantity of the dimensions of length that can be formed out of cc, GG and e24πε0\frac{e^2}{4\pi \varepsilon_0} is [where cc is velocity of light, GG is universal constant of gravitation and ee is charge]

    A

    Gec24πε0\frac{\sqrt{G}e}{c^2\sqrt{4\pi \varepsilon_0}}

    B

    Ge2c24πε0\frac{Ge^2}{c^24\pi \varepsilon_0}

    C

    Gec24πε0\frac{G e}{c^2\sqrt{4\pi \varepsilon_0}}

    D

    Ge2c24πε0\frac{\sqrt{G}e^2}{c^2\sqrt{4\pi \varepsilon_0}}

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    2.

    In the relation y=r sin (ωtkx),  \left( {\omega t - kx} \right),\;, the dimensions of ω/k\omega /k are

    A

    [M0L0T0]\left[ {{{\rm{M}}^0}{{\rm{L}}^0}{{\rm{T}}^0}} \right]

    B

    [M0L1T1]\left[ {{{\rm{M}}^0}{{\rm{L}}^1}{{\rm{T}}^{ - 1}}} \right]

    C

    [M0L0T1]\left[ {{{\rm{M}}^0}{{\rm{L}}^0}{{\rm{T}}^1}} \right]

    D

    [M0L1T0]\left[ {{{\rm{M}}^0}{{\rm{L}}^1}{{\rm{T}}^0}} \right]

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    5.

    The equation P=mxAP = \frac{{mx}}{A} gives a relation between mass m, kept on a surface of area A and pressure P exerted on this area. The dimensions of x are

    A

    [MLT2]\left[ {ML{T^{ - 2}}} \right]

    B

    [LT2]\left[ {L{T^{ - 2}}} \right]

    C

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

    D

    [M1LT]\left[ {{M^{ - 1}}LT} \right]

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    8.

    The dimensions of gravitational constant G are:

    A

    MLT2MLT^{-2}

    B

    ML2T2ML^2T^{-2}

    C

    M1L3T2M^{-1}L^3T^{-2}

    D

    M1L2T3M^{-1}L^2T^{-3}

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    9.

    The potential energy of a particle varies with distance x from a fixed origin as U=(AXx+B);U = \left( {\frac{{A\sqrt X }}{{x + B}}} \right);; where A and B are constants. The dimensions of AB are

    A

    [ML5/2T2]\left[ {{\rm{M}}{{\rm{L}}^{5/2}}{{\rm{T}}^{ - 2}}} \right]

    B

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

    C

    [M3/2L3/2T2]\left[ {{{\rm{M}}^{3/2}}{{\rm{L}}^{3/2}}{{\rm{T}}^{ - 2}}} \right]

    D

    [ML7/2T2]\left[ {{\rm{M}}{{\rm{L}}^{7/2}}{{\rm{T}}^{ - 2}}} \right]

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