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Chapter 1: Problem 76
Light year is a unit of \(\ldots \ldots \ldots \ldots \ldots\) (a) Mass (b) volume (c) density (d) Distance
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Dimensional formula for thermal conductivity (k) is.. (a) \(\mathrm{M}^{2} \mathrm{~L}^{1} \mathrm{~T}^{-2} \mathrm{~K}^{-1}\) (b) \(\mathrm{M}^{1} \mathrm{~L}^{1} \mathrm{~T}^{-2} \mathrm{~K}^{1}\) (c) \(\mathrm{M}^{1} \mathrm{~L}^{0} \mathrm{~T}^{-3} \mathrm{~K}^{-1}\) (d) \(\mathrm{M}^{1} \mathrm{~L}^{1} \mathrm{~T}^{-3} \mathrm{~K}^{-1}\)
If \(\mathrm{A}=3.331 \mathrm{~cm} \mathrm{~B}=3.3 \mathrm{~cm}\) then with regard to significant figure \(\mathrm{A}+\mathrm{B}=\ldots \ldots\) (a) \(6.6 \mathrm{~cm}\) (b) \(6.31 \mathrm{~cm}\) (c) \(6.631 \mathrm{~cm}\) (d) \(6 \mathrm{~cm}\)
If $\mathrm{P}=\left[\left(\mathrm{A}^{2} \mathrm{~B}\right) /\left(\mathrm{C}^{3}\right)\right]\( where percentage error in \)\mathrm{A}, \mathrm{B}\( and \)\mathrm{C}$ are respectively \(\pm 2 \% \pm 3 \%\) and \(\pm 5 \%\) then total percentage error in measurement of \(\mathrm{p}\) (a) \(18 \%\) (b) \(14 \%\) (c) \(21 \%\) (d) \(12 \%\)
Addition of measurement \(15.225 \mathrm{~cm}, 7.21 \mathrm{~cm}\) and $3.0 \mathrm{~cm}\( in significant figure is \)\ldots \ldots \ldots$ (a) \(25.43 \mathrm{~cm}\) (b) \(25.4 \mathrm{~cm}\) (c) \(25.435 \mathrm{~cm}\) (d) \(25.4350 \mathrm{~cm}\)
Which physical quantity is represented by $\mathrm{M}^{1} \mathrm{~L}^{1} \mathrm{~T}^{-3} \mathrm{~A}^{-1} ?$ (a) Stress (b) Resistance (c) Electric field (d) potential Difference
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