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    4.

    The dimensions of pressure are:

    A

    [MLTβˆ’2]\left[ {ML{T^{ - 2}}} \right]

    B

    [MLβˆ’1T2]\left[ {M{L^{ - 1}}{T^2}} \right]

    C

    [MLβˆ’1Tβˆ’2]\left[ {M{L^{ - 1}}{T^{ - 2}}} \right]

    D

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

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    6.

    Dimensions of permeability are

    A

    Aβˆ’2M1L1Tβˆ’2{A^{ - 2}}{M^1}{L^1}{T^{ - 2}}

    B

    MLTβˆ’2ML{T^{ - 2}}

    C

    ML0Tβˆ’1M{L^0}{T^{ - 1}}

    D

    Aβˆ’1MLT2{A^{ - 1}}ML{T^2}

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    7.

    The dimensions of power are

    A

    M1L2Tβˆ’3{M^1}{L^2}{T^{ - 3}}

    B

    M2L1Tβˆ’2{M^2}{L^1}{T^{ - 2}}

    C

    M1L2β€…β€ŠTβˆ’1{M^1}{L^2}\;{T^{ - 1}}

    D

    M1L1Tβˆ’2{M^1}{L^1}{T^{ - 2}}

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    9.

    The displacement xx of a particle as a function of time tt is given by x=Ξ±t2+Ξ²tx = \alpha t^2 + \beta t. If xx is in meters and tt is in seconds, what are the units of Ξ±\alpha and Ξ²\beta respectively?

    A

    extm/exts2ext{m}/ext{s}^2, extm/extsext{m}/ext{s}

    B

    extmβ‹…exts2ext{m} \cdot ext{s}^2, extmβ‹…extsext{m} \cdot ext{s}

    C

    extm/extsext{m}/ext{s}, extm/exts2ext{m}/ext{s}^2

    D

    extmβ‹…extsext{m} \cdot ext{s}, extmβ‹…exts2ext{m} \cdot ext{s}^2

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