66. Dimensional formula for power is ……………

^{2}L

^{–2}T

^{–3}

^{1}L

^{2 }T

^{–2}

^{1}L

^{3 }T

^{–1}

^{0}L

^{2 }T

^{–2}

67. Dimensional formula for calories is ……………

^{1}L

^{1}T

^{–2}

^{2}L

^{1 }T

^{–2}

^{1}L

^{2}T

^{–2}

^{2}L

^{2}T

^{–2}

68. Dimensional formula for thermal conductivity (k) is …………..

(a) M ^{2} L ^{1 }T ^{–2} K ^{–1
}(b) M ^{1} L ^{1}^{ }T ^{–2} K ^{1
}(c) M ^{1} L ^{0 }T ^{–3 }K ^{–1
}(d) M ^{1} L ^{1 }T ^{–3} K ^{–1}

69. Dimensional formula for Resistance (R) is ……………

(a) M ^{1} L ^{1 }T ^{–3} A ^{–1
}(b) M ^{1} L ^{1}^{ }T ^{0} A ^{-1
}(c) M ^{1} L ^{2 }T ^{–3} A ^{–2}^{
}(d) M ^{1} L ^{0 }T ^{–3} A ^{–1}

70. Dimensional formula for conductance is ……………

(a) M ^{–1} L ^{2 }T ^{–3} A ^{2
}(b) M ^{1} L ^{2}^{ }T ^{–2} A ^{1
}(c) M ^{1} L ^{–2 }T ^{3} A ^{2}^{
}(d) M ^{–1} L ^{–2 }T ^{3} A ^{2}

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